RHSA-2026:36767 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

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: Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout (CVE-2024-27398)
• kernel: Bluetooth: SCO: Fix UAF on sco_sock_timeout (CVE-2024-50125)
• kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183)
• kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408)
• kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)
• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)
• kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125)
• kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)
• kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)
• kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189)

Bug Fix(es) and Enhancement(s):

• Kernel panic while shutting down ice driver due to use-after-free [rhel-9.4.z] (JIRA:RHEL-177523)
• crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [rhel-9.4.z] (JIRA:RHEL-182538)

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 9.4 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.4 s390x

Fixes

• BZ - 2280464 - CVE-2024-27398 kernel: Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout
• BZ - 2323937 - CVE-2024-50125 kernel: Bluetooth: SCO: Fix UAF on sco_sock_timeout
• BZ - 2422699 - CVE-2025-68183 kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr
• BZ - 2455334 - CVE-2026-31408 kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold
• BZ - 2464369 - CVE-2026-43027 kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup
• BZ - 2467215 - CVE-2026-43279 kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing
• BZ - 2467234 - CVE-2026-43125 kernel: dlm: validate length in dlm_search_rsb_tree
• BZ - 2481922 - CVE-2026-45984 kernel: gfs2: Fix use-after-free in iomap inline data write path
• BZ - 2482563 - CVE-2026-46152 kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result
• BZ - 2482588 - CVE-2026-46189 kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

CVEs

• CVE-2024-27398
• CVE-2024-50125
• CVE-2025-68183
• CVE-2026-31408
• CVE-2026-43027
• CVE-2026-43125
• CVE-2026-43279
• CVE-2026-45984
• CVE-2026-46152
• CVE-2026-46189

References

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