Skip to content
OpenAdvisories
Medium ALSA-2026:3966 2 CVEs

Moderate: kernel security update

Published Mar 9, 2026 · Updated Oct 29, 2026

Summary

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

Security Fix(es):

* kernel: Linux kernel io_uring: Local privilege escalation, information disclosure, or denial of service via use-after-free (CVE-2025-38106)
* kernel: macvlan: fix possible UAF in macvlan_forward_source() (CVE-2026-23001)

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 74

ReleasePackageFixed in
AlmaLinux · 9 kernel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug-devel-matched 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-debug-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-devel-matched 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-64k-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-abi-stablelists 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-cross-headers 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-devel-matched 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-debug-uki-virt 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-devel-matched 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-doc 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-headers 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-debug-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-64k-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-debug 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-debug-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-debug-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-debug-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-debug-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-debug-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-rt-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-tools 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-tools-libs 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-tools-libs-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-uki-virt 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-uki-virt-addons 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-devel 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-devel-matched 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-modules 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-modules-core 5.14.0-611.38.1.el9_7
AlmaLinux · 9 kernel-zfcpdump-modules-extra 5.14.0-611.38.1.el9_7
AlmaLinux · 9 libperf 5.14.0-611.38.1.el9_7
AlmaLinux · 9 perf 5.14.0-611.38.1.el9_7
AlmaLinux · 9 python3-perf 5.14.0-611.38.1.el9_7
AlmaLinux · 9 rtla 5.14.0-611.38.1.el9_7
AlmaLinux · 9 rv 5.14.0-611.38.1.el9_7

Vulnerabilities 2

  • High 7.8

    io_uring: fix use-after-free of sq->thread in __io_uring_show_fdinfo()

    In the Linux kernel, the following vulnerability has been resolved: io_uring: fix use-after-free of sq->thread in __io_uring_show_fdinfo() syzbot reports: BUG: KASAN: slab-use-after-free in getrusage+0x1109/0x1a60 Read of size 8 at addr ffff88810de2d2c8 by ta…

  • High 7.8
    CVE-2026-23001 Public exploit

    macvlan: fix possible UAF in macvlan_forward_source()

    In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlan_forward_source() Add RCU protection on (struct macvlan_source_entry)->vlan. Whenever macvlan_hash_del_source() is called, we must clear entry->vlan pointe…

References

  • report
    https://access.redhat.com/security/cve/CVE-2025-38106
  • report
    https://access.redhat.com/security/cve/CVE-2026-23001
  • report
    https://bugzilla.redhat.com/2376077
  • report
    https://bugzilla.redhat.com/2432664
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-3966.html