RHSA-2024:1019 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546)
• kernel: inactive elements in nft_pipapo_walk (CVE-2023-6817)
• kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation (CVE-2024-0193)
• kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096)
• kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction (CVE-2023-4244)
• kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size (CVE-2023-6931)
• kernel: use-after-free in amdgpu_cs_wait_all_fences in drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (CVE-2023-51042)
• kernel: use-after-free during a race condition between a nonblocking atomic commit and a driver unload in drivers/gpu/drm/drm_atomic.c (CVE-2023-51043)
• kernel: nf_tables: use-after-free vulnerability in the nft_setelem_catchall_deactivate() function (CVE-2024-1085)
• kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function (CVE-2024-1086)

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 for Real Time for x86_64 - 4 years of updates 9.2 x86_64
• Red Hat Enterprise Linux for Real Time for NFV for x86_64 - 4 years of updates 9.2 x86_64

Fixes

• BZ - 2133452 - CVE-2022-38096 kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query
• BZ - 2235306 - CVE-2023-4244 kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction
• BZ - 2252731 - CVE-2023-6931 kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size
• BZ - 2255139 - CVE-2023-6817 kernel: inactive elements in nft_pipapo_walk
• BZ - 2255498 - CVE-2023-6546 kernel: GSM multiplexing race condition leads to privilege escalation
• BZ - 2255653 - CVE-2024-0193 kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation
• BZ - 2259866 - CVE-2023-51042 kernel: use-after-free in amdgpu_cs_wait_all_fences in drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
• BZ - 2260005 - CVE-2023-51043 kernel: use-after-free during a race condition between a nonblocking atomic commit and a driver unload in drivers/gpu/drm/drm_atomic.c
• BZ - 2262126 - CVE-2024-1086 kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function
• BZ - 2262127 - CVE-2024-1085 kernel: nf_tables: use-after-free vulnerability in the nft_setelem_catchall_deactivate() function

CVEs

• CVE-2022-38096
• CVE-2023-4244
• CVE-2023-6546
• CVE-2023-6817
• CVE-2023-6931
• CVE-2023-51042
• CVE-2023-51043
• CVE-2024-0193
• CVE-2024-1085
• CVE-2024-1086

References

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