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Medium ALSA-2026:74438 3 CVEs

Moderate: kernel security, bug fix, and enhancement update

Published Oct 1, 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: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send (CVE-2026-45856)
* kernel: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path (CVE-2026-63794)
* kernel: futex: Fix race on the initial mm->futex.phash.ref allocation (CVE-2026-80775)

Bug Fix(es) and Enhancement(s):

* Backport of protocol attribute to IP addresses (IFA_PROTO) [almalinux-9.8.z] (JIRA:AlmaLinux-169936)
* try_charge_memcg() refactor in kernel 5.14.0-687.36.1 causes premature memcg OOM with GiB of clean page cache present [almalinux-9.8.z] (JIRA:AlmaLinux-269060)

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 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug-devel-matched 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-debug-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-devel-matched 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-64k-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-abi-stablelists 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-cross-headers 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-devel-matched 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-debug-uki-virt 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-devel-matched 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-doc 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-headers 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-64k-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-debug 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-debug-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-debug-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-debug-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-debug-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-debug-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-rt-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-tools 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-tools-libs 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-tools-libs-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-uki-virt 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-uki-virt-addons 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-devel 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-devel-matched 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-modules 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-modules-core 5.14.0-687.54.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-modules-extra 5.14.0-687.54.1.el9_8
AlmaLinux · 9 libperf 5.14.0-687.54.1.el9_8
AlmaLinux · 9 perf 5.14.0-687.54.1.el9_8
AlmaLinux · 9 python3-perf 5.14.0-687.54.1.el9_8
AlmaLinux · 9 rtla 5.14.0-687.54.1.el9_8
AlmaLinux · 9 rv 5.14.0-687.54.1.el9_8

Vulnerabilities 3

  • High 7.1
    CVE-2026-45856

    RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send

    In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send ib_uverbs_post_send() uses cmd.wqe_size from userspace without any validation before passing it to kmalloc() and using th…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-63794

    KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path

    In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path In sev_dbg_crypt(), the per-iteration transfer length is bounded by the source page offset (PAGE_SIZE - s_off) but not by the d…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-80775 Public exploit

    futex: Fix race on the initial mm->futex.phash.ref allocation

    In the Linux kernel, the following vulnerability has been resolved: futex: Fix race on the initial mm->futex.phash.ref allocation futex_hash_allocate() allocates mm->futex.phash.ref without any locking. Commit d9b05321e21e ("futex: Move futex_hash_free() back…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-45856
  • report
    https://access.redhat.com/security/cve/CVE-2026-63794
  • report
    https://access.redhat.com/security/cve/CVE-2026-80775
  • report
    https://bugzilla.redhat.com/2482129
  • report
    https://bugzilla.redhat.com/2502241
  • report
    https://bugzilla.redhat.com/2528550
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-74438.html