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Medium ALSA-2025:11850 4 CVEs

Moderate: kernel security update

Published Jul 28, 2025 · 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: wifi: iwlwifi: limit printed string from FW file (CVE-2025-21905)
* kernel: sched/fair: Fix potential memory corruption in child_cfs_rq_on_list (CVE-2025-21919)
* kernel: ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead (CVE-2022-49977)

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 25

ReleasePackageFixed in
AlmaLinux · 8 bpftool 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-abi-stablelists 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-core 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-cross-headers 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-debug 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-debug-core 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-debug-devel 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-debug-modules 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-debug-modules-extra 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-devel 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-doc 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-headers 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-modules 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-modules-extra 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-tools 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-tools-libs 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-tools-libs-devel 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-zfcpdump 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-core 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-devel 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-modules 4.18.0-553.64.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-modules-extra 4.18.0-553.64.1.el8_10
AlmaLinux · 8 perf 4.18.0-553.64.1.el8_10
AlmaLinux · 8 python3-perf 4.18.0-553.64.1.el8_10

Vulnerabilities 4

  • High 7.8
    CVE-2022-49977

    ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead

    In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead ftrace_startup does not remove ops from ftrace_ops_list when ftrace_startup_enable fails: register_ftrace_func…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-21919

    sched/fair: Fix potential memory corruption in child_cfs_rq_on_list

    In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in child_cfs_rq_on_list child_cfs_rq_on_list attempts to convert a 'prev' pointer to a cfs_rq. This 'prev' pointer can originate from struct rq's l…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2025-38393

    NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN

    In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN We found a few different systems hung up in writeback waiting on the same page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in pnf…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2025-21905

    wifi: iwlwifi: limit printed string from FW file

    In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: limit printed string from FW file There's no guarantee here that the file is always with a NUL-termination, so reading the string may read beyond the end of the TLV. If that's …

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

References

  • report
    https://access.redhat.com/security/cve/CVE-2022-49977
  • report
    https://access.redhat.com/security/cve/CVE-2025-21905
  • report
    https://access.redhat.com/security/cve/CVE-2025-21919
  • report
    https://bugzilla.redhat.com/2356613
  • report
    https://bugzilla.redhat.com/2356618
  • report
    https://bugzilla.redhat.com/2373574
  • advisory
    https://errata.almalinux.org/8/ALSA-2025-11850.html
  • report
    https://www.redhat.com/security/data/cve/CVE-2025-38393.html