CVE-2026-74602
linux: In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rb_...
CVE-2026-74602 is fixed in 87 products on 1 platform, first by DEBIAN-CVE-2026-74602, released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
IMPORTANT
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0017
6th percentile
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer() In rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGE_SIZE if when freed: free_buffer_page() relies on this value. Align the value with the actual allocation size (buffer::subbuf_order).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-azure · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-azure · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-default · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24197-1 | Nov 7, 2026 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.39.1.160000.2.25 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.39.1.160000.2.26 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-docs · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-livepatch-6.12.110-135.201 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel-livepatch-6.18.48-107.148 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-source · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-syms · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-uek · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-core · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-core · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-devel · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-devel · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-doc · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-doc · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-tools · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek-tools · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-207.111.5.1.el9uek | ELSA-2026-500374 | Oct 7, 2026 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.105-1 | DEBIAN-CVE-2026-74602 | Aug 27, 2026 |
| linux · Debian 14 | 7.1.9-1 | DEBIAN-CVE-2026-74602 | Aug 27, 2026 |
| linux-6.12 · Debian 12.15 (bookworm) | 6.12.107-1~deb12u1 | DEBIAN-CVE-2026-74602 | Aug 27, 2026 |
| microvm-kernel6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.110-135.201.amzn2023 | ALAS2023-2026-3196 | Nov 7, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
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