# CVE-2026-31588: KVM: x86: Use scratch field in MMIO fragment to hold small write values CVE-2026-31588 is fixed in 103 products on 1 platform, first by ALAS2023-2026-1695, released May 8, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-31588 - Priority: High - CVSS: 8.8 (Moderate) - EPSS: 0.0019 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 24, 2026 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31588 ## Description In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use scratch field in MMIO fragment to hold small write values When exiting to userspace to service an emulated MMIO write, copy the to-be-written value to a scratch field in the MMIO fragment if the size of the data payload is 8 bytes or less, i.e. can fit in a single chunk, instead of pointing the fragment directly at the source value. This fixes a class of use-after-free bugs that occur when the emulator initiates a write using an on-stack, local variable as the source, the write splits a page boundary, *and* both pages are MMIO pages. Because KVM's ABI only allows for physically contiguous MMIO requests, accesses that split MMIO pages are separated into two fragments, and are sent to userspace one at a time. When KVM attempts to complete userspace MMIO in response to KVM_RUN after the first fragment, KVM will detect the second fragment and generate a second userspace exit, and reference the on-stack variable. The issue is most visible if the second KVM_RUN is performed by a separate task, in which case the stack of the initiating task can show up as truly freed data. ================================================================== BUG: KASAN: use-after-free in complete_emulated_mmio+0x305/0x420 Read of size 1 at addr ffff888009c378d1 by task syz-executor417/984 CPU: 1 PID: 984 Comm: syz-executor417 Not tainted 5.10.0-182.0.0.95.h2627.eulerosv2r13.x86_64 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack+0xbe/0xfd print_address_description.constprop.0+0x19/0x170 __kasan_report.cold+0x6c/0x84 kasan_report+0x3a/0x50 check_memory_region+0xfd/0x1f0 memcpy+0x20/0x60 complete_emulated_mmio+0x305/0x420 kvm_arch_vcpu_ioctl_run+0x63f/0x6d0 kvm_vcpu_ioctl+0x413/0xb20 __se_sys_ioctl+0x111/0x160 do_syscall_64+0x30/0x40 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x42477d Code: <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007faa8e6890e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004d7338 RCX: 000000000042477d RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00000000004d7330 R08: 00007fff28d546df R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004d733c R13: 0000000000000000 R14: 000000000040a200 R15: 00007fff28d54720 The buggy address belongs to the page: page:0000000029f6a428 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9c37 flags: 0xfffffc0000000(node=0|zone=1|lastcpupid=0x1fffff) raw: 000fffffc0000000 0000000000000000 ffffea0000270dc8 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888009c37780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888009c37800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888009c37880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888009c37900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888009c37980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== The bug can also be reproduced with a targeted KVM-Unit-Test by hacking KVM to fill a large on-stack variable in complete_emulated_mmio(), i.e. by overwrite the data value with garbage. Limit the use of the scratch fields to 8-byte or smaller accesses, and to just writes, as larger accesses and reads are not affected thanks to implementation details in the emulator, but add a sanity check to ensure those details don't change in the future. Specifically, KVM never uses on-stack variables for accesses larger that 8 bytes, e.g. uses an operand in the emulator context, and *al ---truncated--- ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | bpftool ol 8 | 0:5.15.0-323.211.3.3.el9uek | [bpftool 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-bpftool-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | bpftool ol 9 | 0:5.15.0-323.211.3.3.el9uek | [bpftool 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-9-bpftool-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | bpftool-debuginfo amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | bpftool6.12 amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | bpftool6.18 amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | bpftool6.18-debuginfo amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-azure sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-debuginfo amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-default sles 15.6 | 6.4.0-150600.23.112.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-default sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.112.1.150600.12.52.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.55.1.150700.17.33.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-devel amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.112.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-headers amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-livepatch-6.1.175-219.357 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-livepatch-6.12.83-113.160 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel-livepatch-6.18.25-55.108 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel-livepatch-SLE15-SP6_Update_26 sles 15.6 | 1-150600.13.3.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-livepatch-SLE15-SP7_Update_15 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-modules-extra amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-modules-extra-common amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.112.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-source sles 15.6 | 6.4.0-150600.23.112.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-source sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.112.1 | [SUSE-SU-2026:2195-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2195-1.md) | Jul 1, 2026 | | Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel-tools amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-tools-debuginfo amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-tools-devel amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | kernel-uek ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-container ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-container 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-container-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-container ol 9 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-container 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-9-kernel-uek-container-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-container-debug 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-container-debug-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-container-debug 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-9-kernel-uek-container-debug-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-core ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-core ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-core 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-core-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-core ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-debug 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-debug-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-debug ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-core ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-debug-core 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-debug-core-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-debug-core ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-devel ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-debug-devel 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-debug-devel-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-debug-devel ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-debug-modules 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-debug-modules-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-debug-modules ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-core ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-core ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-deprecated ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-deprecated ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-desktop ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-desktop ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-extra ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-debug-modules-extra 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-debug-modules-extra-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-debug-modules-extra ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-extra-netfilter ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-extra-netfilter ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-usb ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-usb ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-wireless ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-debug-modules-wireless ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-devel ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-devel ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-devel 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-devel-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-devel ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-doc ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-doc ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-doc 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-doc-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-doc ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-modules 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-modules-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-modules ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-core ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-core ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-deprecated ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-deprecated ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-desktop ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-desktop ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-extra ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek-modules-extra 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek-modules-extra-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek-modules-extra ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-extra-netfilter ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-extra-netfilter ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-usb ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-usb ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-wireless ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-modules-wireless ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-tools ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek-tools ol 8 | 0:5.4.17-2136.360.3.el7uek | [ELSA-2026-500375](https://patchblox.com/security/data/fix/linux/elsa-2026-500375.md) | Oct 6, 2026 | | Linux | kernel-uek-tools ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek64k 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek64k-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek64k ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-core ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-core ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek64k-core 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek64k-core-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek64k-core ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-devel ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-devel ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek64k-devel 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek64k-devel-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek64k-devel ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek64k-modules 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek64k-modules-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek64k-modules ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-core ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-core ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-deprecated ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-deprecated ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-desktop ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-desktop ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-extra ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-extra ol 8 | 0:5.15.0-323.211.3.3.el9uek | [kernel-uek64k-modules-extra 0:5.15.0-323.211.3.3.el9uek](https://patchblox.com/security/data/fix/linux/ol-8-kernel-uek64k-modules-extra-0-5.15.0-323.211.3.3.el9uek.md) | Aug 11, 2026 | | Linux | kernel-uek64k-modules-extra ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-extra-netfilter ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-extra-netfilter ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-usb ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-usb ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-wireless ol 10 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-uek64k-modules-wireless ol 9 | 0:6.12.0-204.92.4.2.el9uek | [ELSA-2026-50372](https://patchblox.com/security/data/fix/linux/elsa-2026-50372.md) | Jul 2, 2026 | | Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.55.1 | [SUSE-SU-2026:2238-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2238-1.md) | Jun 30, 2026 | | Linux | kernel6.12 amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | kernel6.18 amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-debuginfo amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-debuginfo-common-aarch64 amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-debuginfo-common-x86_64 amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-devel amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-headers amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-modules-extra amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-modules-extra-common amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-tools amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-tools-debuginfo amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | kernel6.18-tools-devel amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | linux Debian 12.15 (bookworm) | 6.1.176-1 | [DEBIAN-CVE-2026-31588](https://patchblox.com/security/data/fix/linux/debian-cve-2026-31588.md) | May 15, 2026 | | Linux | linux Debian 13.5 (trixie) | 6.12.85-1 | [DEBIAN-CVE-2026-31588](https://patchblox.com/security/data/fix/linux/debian-cve-2026-31588.md) | May 15, 2026 | | Linux | linux Debian 14 | 6.19.14-1 | [DEBIAN-CVE-2026-31588](https://patchblox.com/security/data/fix/linux/debian-cve-2026-31588.md) | May 15, 2026 | | Linux | perf amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | perf-debuginfo amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | perf6.12 amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | perf6.18 amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | perf6.18-debuginfo amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | python3-perf amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | python3-perf-debuginfo amzn 2023 | 1:6.1.175-219.357.amzn2023 | [ALAS2023-2026-1882](https://patchblox.com/security/data/fix/linux/alas2023-2026-1882.md) | Jun 22, 2026 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.83-113.160.amzn2023 | [ALAS2023-2026-1695](https://patchblox.com/security/data/fix/linux/alas2023-2026-1695.md) | May 8, 2026 | | Linux | python3-perf6.18 amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | | Linux | python3-perf6.18-debuginfo amzn 2023 | 1:6.18.25-55.108.amzn2023 | [ALAS2023-2026-1693](https://patchblox.com/security/data/fix/linux/alas2023-2026-1693.md) | May 8, 2026 | --- Data as of 2026-11-10T07:50:38Z UTC. 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