RHSA-2025:9494 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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: tipc: fix use-after-free Read in tipc_named_reinit (CVE-2022-49696)
• kernel: mt76: fix use-after-free by removing a non-RCU wcid pointer (CVE-2022-49328)
• kernel: ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

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 for Power LE - Update Services for SAP Solutions 9.0 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.0 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.0 s390x

Fixes

• BZ - 2347851 - CVE-2022-49696 kernel: tipc: fix use-after-free Read in tipc_named_reinit
• BZ - 2348217 - CVE-2022-49328 kernel: mt76: fix use-after-free by removing a non-RCU wcid pointer
• BZ - 2348575 - CVE-2025-21764 kernel: ndisc: use RCU protection in ndisc_alloc_skb()

CVEs

• CVE-2022-49328
• CVE-2022-49696
• CVE-2025-21764

References

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