RHSA-2024:5692 - 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 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: smb: client: fix potential OOBs in smb2_parse_contexts() (CVE-2023-52434)
• kernel: ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry (CVE-2021-47069)
• kernel: net/sched: act_ct: fix skb leak and crash on ooo frags (CVE-2023-52610)
• kernel: wifi: iwlwifi: dbg-tlv: ensure NUL termination (CVE-2024-35845)
• kernel: mISDN: fix possible use-after-free in HFC_cleanup() (CVE-2021-47356)
• kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)
• kernel: isdn: mISDN: Fix sleeping function called from invalid context (CVE-2021-47468)
• kernel: tty: n_gsm: fix possible out-of-bounds in gsm0_receive() (CVE-2024-36016)
• kernel: wifi: nl80211: don't free NULL coalescing rule (CVE-2024-36941)
• kernel: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique(). (CVE-2024-36904)
• kernel: gfs2: Fix potential glock use-after-free on unmount (CVE-2024-38570)
• kernel: KVM: x86: nSVM: fix potential NULL derefernce on nested migration (CVE-2022-48793)
• kernel: perf: Fix list corruption in perf_cgroup_switch() (CVE-2022-48799)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer 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 - 2265285 - CVE-2023-52434 kernel: smb: client: fix potential OOBs in smb2_parse_contexts()
• BZ - 2267513 - CVE-2021-47069 kernel: ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry
• BZ - 2270080 - CVE-2023-52610 kernel: net/sched: act_ct: fix skb leak and crash on ooo frags
• BZ - 2281272 - CVE-2024-35845 kernel: wifi: iwlwifi: dbg-tlv: ensure NUL termination
• BZ - 2282394 - CVE-2021-47356 kernel: mISDN: fix possible use-after-free in HFC_cleanup()
• BZ - 2282719 - CVE-2023-52864 kernel: platform/x86: wmi: Fix opening of char device
• BZ - 2282887 - CVE-2021-47468 kernel: isdn: mISDN: Fix sleeping function called from invalid context
• BZ - 2283894 - CVE-2024-36016 kernel: tty: n_gsm: fix possible out-of-bounds in gsm0_receive()
• BZ - 2284474 - CVE-2024-36941 kernel: wifi: nl80211: don't free NULL coalescing rule
• BZ - 2284541 - CVE-2024-36904 kernel: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique().
• BZ - 2293423 - CVE-2024-38570 kernel: gfs2: Fix potential glock use-after-free on unmount
• BZ - 2298129 - CVE-2022-48793 kernel: KVM: x86: nSVM: fix potential NULL derefernce on nested migration
• BZ - 2298135 - CVE-2022-48799 kernel: perf: Fix list corruption in perf_cgroup_switch()

CVEs

• CVE-2021-47069
• CVE-2021-47356
• CVE-2021-47468
• CVE-2022-48793
• CVE-2022-48799
• CVE-2023-52434
• CVE-2023-52610
• CVE-2023-52864
• CVE-2024-35845
• CVE-2024-36016
• CVE-2024-36904
• CVE-2024-36941
• CVE-2024-38570

References

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