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OpenAdvisories
High ALSA-2026:36541 6 CVEs

Important: kernel security, bug fix, and enhancement update

Published Jul 8, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: eventpoll: defer struct eventpoll free to RCU grace period (CVE-2026-43074)
* kernel: net: mana: Fix double destroy_workqueue on service rescan PCI path (CVE-2026-43276)
* kernel: net/ipv6: ioam6: prevent schema length wraparound in trace fill (CVE-2026-43341)
* kernel: smb/client: fix out-of-bounds read in smb2_compound_op() (CVE-2026-46155)
* kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF (CVE-2026-46242)
* kernel: procfs: fix missing RCU protection when reading real_parent in do_task_stat() (CVE-2026-46259)

Bug Fix(es) and Enhancement(s):

* CNB103: net: page_pool: avoid false positive warning if NAPI was never added [almalinux-10.2.z] (JIRA:AlmaLinux-162140)
* [AlmaLinux 10] Bonding reports unknown speed/duplex for tg3 interface [almalinux-10.2.z] (JIRA:AlmaLinux-182770)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 75

ReleasePackageFixed in
AlmaLinux · 10 kernel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug-devel-matched 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-debug-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-devel-matched 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-64k-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-abi-stablelists 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-cross-headers 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-devel-matched 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-debug-uki-virt 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-devel-matched 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-doc 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-headers 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-modules-extra-matched 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-debug 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-debug-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-debug-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-debug-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-debug-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-debug-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-64k-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-debug 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-debug-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-debug-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-debug-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-debug-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-debug-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-rt-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-tools 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-tools-libs 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-tools-libs-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-uki-virt 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-uki-virt-addons 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump-devel 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump-devel-matched 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump-modules 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump-modules-core 6.12.0-211.31.1.el10_2
AlmaLinux · 10 kernel-zfcpdump-modules-extra 6.12.0-211.31.1.el10_2
AlmaLinux · 10 libperf 6.12.0-211.31.1.el10_2
AlmaLinux · 10 perf 6.12.0-211.31.1.el10_2
AlmaLinux · 10 python3-perf 6.12.0-211.31.1.el10_2
AlmaLinux · 10 rtla 6.12.0-211.31.1.el10_2
AlmaLinux · 10 rv 6.12.0-211.31.1.el10_2

Vulnerabilities 6

  • Critical 9.8
    CVE-2026-43341

    net/ipv6: ioam6: prevent schema length wraparound in trace fill

    In the Linux kernel, the following vulnerability has been resolved: net/ipv6: ioam6: prevent schema length wraparound in trace fill ioam6_fill_trace_data() stores the schema contribution to the trace length in a u8. With bit 22 enabled and the largest schema …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.1
    CVE-2026-46155

    smb/client: fix out-of-bounds read in smb2_compound_op()

    In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in smb2_compound_op() If a server sends a truncated response but a large OutputBufferLength, and terminates the EA list early, check_wsl_eas() returns succe…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-43074 Public exploit

    eventpoll: defer struct eventpoll free to RCU grace period

    In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while it still being used by another concurr…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-46242 Public exploit

    eventpoll: fix ep_remove struct eventpoll / struct file UAF

    In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix ep_remove struct eventpoll / struct file UAF ep_remove() (via ep_remove_file()) cleared file->f_ep under file->f_lock but then kept using @file inside the critical section (is_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-46259

    procfs: fix missing RCU protection when reading real_parent in do_task_stat()

    In the Linux kernel, the following vulnerability has been resolved: procfs: fix missing RCU protection when reading real_parent in do_task_stat() When reading /proc/[pid]/stat, do_task_stat() accesses task->real_parent without proper RCU protection, which lea…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-43276

    net: mana: Fix double destroy_workqueue on service rescan PCI path

    In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix double destroy_workqueue on service rescan PCI path While testing corner cases in the driver, a use-after-free crash was found on the service rescan PCI path. When mana_serv_re…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-43074
  • report
    https://access.redhat.com/security/cve/CVE-2026-43276
  • report
    https://access.redhat.com/security/cve/CVE-2026-43341
  • report
    https://access.redhat.com/security/cve/CVE-2026-46155
  • report
    https://access.redhat.com/security/cve/CVE-2026-46242
  • report
    https://access.redhat.com/security/cve/CVE-2026-46259
  • report
    https://bugzilla.redhat.com/2467019
  • report
    https://bugzilla.redhat.com/2467113
  • report
    https://bugzilla.redhat.com/2468097
  • report
    https://bugzilla.redhat.com/2482660
  • report
    https://bugzilla.redhat.com/2483519
  • report
    https://bugzilla.redhat.com/2484477
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-36541.html