# CVE-2023-53781: linux: In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in tcp_write_timer_handl... CVE-2023-53781 is fixed in 78 products on 1 platform, first by RHSA-2025:20518, released November 11, 2025. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-53781 - Priority: High - CVSS: 8.8 (high) - EPSS: 0.0015 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Nov 11, 2025 ## Description In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in tcp_write_timer_handler(). With Eric's ref tracker, syzbot finally found a repro for use-after-free in tcp_write_timer_handler() by kernel TCP sockets. [0] If SMC creates a kernel socket in __smc_create(), the kernel socket is supposed to be freed in smc_clcsock_release() by calling sock_release() when we close() the parent SMC socket. However, at the end of smc_clcsock_release(), the kernel socket's sk_state might not be TCP_CLOSE. This means that we have not called inet_csk_destroy_sock() in __tcp_close() and have not stopped the TCP timers. The kernel socket's TCP timers can be fired later, so we need to hold a refcnt for net as we do for MPTCP subflows in mptcp_subflow_create_socket(). [0]: leaked reference. sk_alloc (./include/net/net_namespace.h:335 net/core/sock.c:2108) inet_create (net/ipv4/af_inet.c:319 net/ipv4/af_inet.c:244) __sock_create (net/socket.c:1546) smc_create (net/smc/af_smc.c:3269 net/smc/af_smc.c:3284) __sock_create (net/socket.c:1546) __sys_socket (net/socket.c:1634 net/socket.c:1618 net/socket.c:1661) __x64_sys_socket (net/socket.c:1672) do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) ================================================================== BUG: KASAN: slab-use-after-free in tcp_write_timer_handler (net/ipv4/tcp_timer.c:378 net/ipv4/tcp_timer.c:624 net/ipv4/tcp_timer.c:594) Read of size 1 at addr ffff888052b65e0d by task syzrepro/18091 CPU: 0 PID: 18091 Comm: syzrepro Tainted: G W 6.3.0-rc4-01174-gb5d54eb5899a #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.amzn2022.0.1 04/01/2014 Call Trace: dump_stack_lvl (lib/dump_stack.c:107) print_report (mm/kasan/report.c:320 mm/kasan/report.c:430) kasan_report (mm/kasan/report.c:538) tcp_write_timer_handler (net/ipv4/tcp_timer.c:378 net/ipv4/tcp_timer.c:624 net/ipv4/tcp_timer.c:594) tcp_write_timer (./include/linux/spinlock.h:390 net/ipv4/tcp_timer.c:643) call_timer_fn (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/timer.h:127 kernel/time/timer.c:1701) __run_timers.part.0 (kernel/time/timer.c:1752 kernel/time/timer.c:2022) run_timer_softirq (kernel/time/timer.c:2037) __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:572) __irq_exit_rcu (kernel/softirq.c:445 kernel/softirq.c:650) irq_exit_rcu (kernel/softirq.c:664) sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1107 (discriminator 14)) ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | bpftool almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | bpftool ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel rocky 8 | 0:4.18.0-553.132.1.el8_10.cloud.0.1 | [RXSA-2026:25121](https://patchblox.com/security/data/fix/linux/rxsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-64k RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug-devel-matched RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-debug-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-devel-matched RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-64k-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-abi-stablelists RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-abi-stablelists RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-abi-stablelists almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-abi-stablelists ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-core RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-core almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-core ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-cross-headers almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-cross-headers ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-debug RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-debug RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-debug ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-debug-core RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-debug-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug-core almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-debug-core ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-debug-devel RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-debug-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug-devel almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-debug-devel ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-debug-devel-matched RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug-modules RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-debug-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug-modules almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-debug-modules ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-debug-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug-modules-extra RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-debug-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-debug-modules-extra almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-debug-modules-extra ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-debug-uki-virt RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-devel RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-devel almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-devel ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-devel-matched RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-doc RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-doc RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-doc almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-doc ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-headers almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-headers ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-modules RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-modules almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-modules ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-modules-extra RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-modules-extra almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-modules-extra ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-rt RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt rocky 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RLSA-2026:25120](https://patchblox.com/security/data/fix/linux/rlsa-2026-25120.md) | Jun 12, 2026 | | Linux | kernel-rt-64k RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-debug RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-debug-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-debug-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-debug-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-debug-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-debug-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-64k-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-core RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-core almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-debug RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-debug RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-debug almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-debug-core RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-debug-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-debug-core almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-debug-devel RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-debug-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-debug-devel almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-debug-kvm RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-debug-modules RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-debug-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-debug-modules almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-debug-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-debug-modules-extra RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-debug-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-debug-modules-extra almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-devel RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-devel almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-kvm RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-modules RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-modules almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-rt-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-modules-extra RHEL 8 | 0:4.18.0-553.132.1.rt7.473.el8_10 | [RHSA-2026:25120](https://patchblox.com/security/data/fix/linux/rhsa-2026-25120.md) | Jun 24, 2026 | | Linux | kernel-rt-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-rt-modules-extra almalinux 8 | 4.18.0-553.132.1.rt7.473.el8_10 | [ALSA-2026:25120](https://patchblox.com/security/data/fix/linux/alsa-2026-25120.md) | Jun 10, 2026 | | Linux | kernel-tools RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-tools RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-tools almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-tools ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-tools-libs RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-tools-libs RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-tools-libs almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-tools-libs ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-tools-libs-devel RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-tools-libs-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-tools-libs-devel almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-tools-libs-devel ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | kernel-uki-virt RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-uki-virt-addons RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-zfcpdump RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-zfcpdump-core RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-zfcpdump-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump-core almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-zfcpdump-devel RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-zfcpdump-devel RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump-devel almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-zfcpdump-devel-matched RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump-modules RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-zfcpdump-modules RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump-modules almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | kernel-zfcpdump-modules-core RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump-modules-extra RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | kernel-zfcpdump-modules-extra RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | kernel-zfcpdump-modules-extra almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | libperf RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-53781](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53781.md) | Dec 9, 2025 | | Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-53781](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53781.md) | Dec 9, 2025 | | Linux | perf RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | perf RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | perf almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | perf ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | python3-perf RHEL 8 | 0:4.18.0-553.132.1.el8_10 | [RHSA-2026:25121](https://patchblox.com/security/data/fix/linux/rhsa-2026-25121.md) | Jun 24, 2026 | | Linux | python3-perf RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | python3-perf almalinux 8 | 4.18.0-553.132.1.el8_10 | [ALSA-2026:25121](https://patchblox.com/security/data/fix/linux/alsa-2026-25121.md) | Jun 10, 2026 | | Linux | python3-perf ol 8 | 0:4.18.0-553.132.1.el8_10 | [ELSA-2026-25121](https://patchblox.com/security/data/fix/linux/elsa-2026-25121.md) | Jun 15, 2026 | | Linux | rtla RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | | Linux | rv RHEL 9 | 0:5.14.0-611.5.1.el9_7 | [RHSA-2025:20518](https://patchblox.com/security/data/fix/linux/rhsa-2025-20518.md) | Nov 11, 2025 | --- Data as of 2026-11-09T07:25:28Z UTC. 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