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Medium RLSA-2025:11855 5 CVEs

Moderate: kernel security update

Published Oct 3, 2025 · Updated Oct 8, 2025

Summary

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

Security Fix(es):

* kernel: RDMA/mlx5: Fix page_size variable overflow (CVE-2025-22091)

* kernel: ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() (CVE-2025-22121)

* kernel: net_sched: hfsc: Fix a UAF vulnerability in class handling (CVE-2025-37797)

* kernel: powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap (CVE-2025-38088)

* kernel: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access (CVE-2025-38110)

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 1

ReleasePackageFixed in
Rocky Linux · 10 kernel 0:6.12.0-55.24.1.el10_0

Vulnerabilities 5

  • High 8.4

    ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

    In the Linux kernel, the following vulnerability has been resolved: ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() There's issue as follows: BUG: KASAN: use-after-free in ext4_xattr_inode_dec_ref_all+0x6ff/0x790 Read of size 4 at addr ffff88807…

  • High 7.8

    net_sched: hfsc: Fix a UAF vulnerability in class handling

    In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class handling This patch fixes a Use-After-Free vulnerability in the HFSC qdisc class handling. The issue occurs due to a time-of-check/time-of-us…

  • High 7.8

    net/mdiobus: Fix potential out-of-bounds clause 45 read/write access

    In the Linux kernel, the following vulnerability has been resolved: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access When using publicly available tools like 'mdio-tools' to read/write data from/to network interface and its PHY via C45 (cl…

  • Unscored —

    RDMA/mlx5: Fix page_size variable overflow

    In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix page_size variable overflow Change all variables storing mlx5_umem_mkc_find_best_pgsz() result to unsigned long to support values larger than 31 and avoid overflow. For example…

  • Unscored —

    powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap

    In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap memtrace mmap issue has an out of bounds issue. This patch fixes the by checking that the requested mapping region size shou…

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2360186
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2360199
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2363672
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2375528
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2376035