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High RLSA-2025:8643 6 CVEs

Important: kernel security update

Published Oct 4, 2025 · Updated Oct 4, 2025

Ecosystem: Rocky Linux

Summary

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

Security Fix(es):

* kernel: net: gso: fix ownership in __udp_gso_segment (CVE-2025-21926)

* kernel: vlan: enforce underlying device type (CVE-2025-21920)

* kernel: xsk: fix an integer overflow in xp_create_and_assign_umem() (CVE-2025-21997)

* kernel: net: fix geneve_opt length integer overflow (CVE-2025-22055)

* kernel: ext4: fix OOB read when checking dotdot dir (CVE-2025-37785)

* kernel: wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi (CVE-2025-37943)

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 · 9 kernel 0:5.14.0-570.21.1.el9_6

Vulnerabilities 6

  • High 8.8
    CVE-2025-37943

    wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi

    In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi In certain cases, hardware might provide packets with a length greater than the maximum native Wi-Fi header length. This …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-21926

    net: gso: fix ownership in __udp_gso_segment

    In the Linux kernel, the following vulnerability has been resolved: net: gso: fix ownership in __udp_gso_segment In __udp_gso_segment the skb destructor is removed before segmenting the skb but the socket reference is kept as-is. This is an issue if the origi…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-37785

    ext4: fix OOB read when checking dotdot dir

    In the Linux kernel, the following vulnerability has been resolved: ext4: fix OOB read when checking dotdot dir Mounting a corrupted filesystem with directory which contains '.' dir entry with rec_len == block size results in out-of-bounds read (later on, whe…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2025-21920

    vlan: enforce underlying device type

    In the Linux kernel, the following vulnerability has been resolved: vlan: enforce underlying device type Currently, VLAN devices can be created on top of non-ethernet devices. Besides the fact that it doesn't make much sense, this also causes a bug which leak…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2025-22055

    net: fix geneve_opt length integer overflow

    In the Linux kernel, the following vulnerability has been resolved: net: fix geneve_opt length integer overflow struct geneve_opt uses 5 bit length for each single option, which means every vary size option should be smaller than 128 bytes. However, all curre…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Medium 5.5
    CVE-2025-21997

    xsk: fix an integer overflow in xp_create_and_assign_umem()

    In the Linux kernel, the following vulnerability has been resolved: xsk: fix an integer overflow in xp_create_and_assign_umem() Since the i and pool->chunk_size variables are of type 'u32', their product can wrap around and then be cast to 'u64'. This can lea…

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

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2356587
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2356639
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2357143
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2360300
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2360921
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2367748