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Medium ALSA-2026:3275 4 CVEs

Moderate: kernel security update

Published Feb 25, 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: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service (CVE-2025-38206)
* kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096)
* kernel: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() (CVE-2025-40168)
* kernel: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats (CVE-2025-68800)

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 2

ReleasePackageFixed in
AlmaLinux · 10 kernel-abi-stablelists 6.12.0-124.39.1.el10_1
AlmaLinux · 10 kernel-doc 6.12.0-124.39.1.el10_1

Vulnerabilities 4

  • High 8.1
    CVE-2025-40168

    smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

    In the Linux kernel, the following vulnerability has been resolved: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match(). smc_clc_prfx_match() is called from smc_listen_work() and not under RCU nor RTNL. Using sk_dst_get(sk)->dev could trigger UA…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-38206

    exfat: fix double free in delayed_free

    In the Linux kernel, the following vulnerability has been resolved: exfat: fix double free in delayed_free The double free could happen in the following path. exfat_create_upcase_table() exfat_create_upcase_table() : return error exfat_free_upcase_table() : f…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-40096

    drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies

    In the Linux kernel, the following vulnerability has been resolved: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies When adding dependencies with drm_sched_job_add_dependency(), that function consumes the fence reference both on su…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-68800

    mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats

    In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats Cited commit added a dedicated mutex (instead of RTNL) to protect the multicast route list, so that it will not chan…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • report
    https://access.redhat.com/security/cve/CVE-2025-38206
  • report
    https://access.redhat.com/security/cve/CVE-2025-40096
  • report
    https://access.redhat.com/security/cve/CVE-2025-40168
  • report
    https://access.redhat.com/security/cve/CVE-2025-68800
  • report
    https://bugzilla.redhat.com/2376377
  • report
    https://bugzilla.redhat.com/2407333
  • report
    https://bugzilla.redhat.com/2414482
  • report
    https://bugzilla.redhat.com/2429065
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-3275.html