RHSA-2024:6998 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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

Security Fix(es):

• kernel: net: fix possible store tearing in neigh_periodic_work() (CVE-2023-52522)
• kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats (CVE-2024-26686)
• kernel: cgroup: cgroup_get_from_id() must check the looked-up kn is a directory (CVE-2022-48638)
• kernel: nvme-tcp: fix UAF when detecting digest errors (CVE-2022-48686)
• kernel: mptcp: ensure snd_nxt is properly initialized on connect (CVE-2024-36889)
• kernel: wifi: mac80211: Avoid address calculations via out of bounds array indexing (CVE-2024-41071)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• BZ - 2267795 - CVE-2023-52522 kernel: net: fix possible store tearing in neigh_periodic_work()
• BZ - 2273109 - CVE-2024-26686 kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
• BZ - 2277829 - CVE-2022-48638 kernel: cgroup: cgroup_get_from_id() must check the looked-up kn is a directory
• BZ - 2278931 - CVE-2022-48686 kernel: nvme-tcp: fix UAF when detecting digest errors
• BZ - 2284571 - CVE-2024-36889 kernel: mptcp: ensure snd_nxt is properly initialized on connect
• BZ - 2300448 - CVE-2024-41071 kernel: wifi: mac80211: Avoid address calculations via out of bounds array indexing

CVEs

• CVE-2022-48638
• CVE-2022-48686
• CVE-2023-52522
• CVE-2024-26686
• CVE-2024-36889
• CVE-2024-41071

References

• https://access.redhat.com/security/updates/classification/#important