RHSA-2024:1614 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

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: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096)
• kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size (CVE-2023-6931)
• kernel: GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546,ZDI-CAN-20527)
• kernel: CIFS Filesystem Decryption Improper Input Validation Remote Code Execution Vulnerability in function receive_encrypted_standard of client (CVE-2024-0565)
• kernel: use-after-free in amdgpu_cs_wait_all_fences in drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (CVE-2023-51042)
• kernel: ext4: kernel bug in ext4_write_inline_data_end() (CVE-2021-33631)
• kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function (CVE-2024-1086)

Bug Fix(es):

• kernel-rt: update RT source tree to the latest RHEL-8.9.z3 Batch (JIRA:RHEL-23853)
• kernel-rt: kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function (JIRA:RHEL-24015)
• kernel-rt: kernel: vmxgfx: NULL pointer dereference in vmw_cmd_dx_define_query (JIRA:RHEL-22758)
• kernel-rt: kernel: CIFS Filesystem Decryption Improper Input Validation Remote Code Execution Vulnerability in function receive_encrypted_standard of client (JIRA:RHEL-22080)
• kernel-rt: kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size (JIRA:RHEL-22933)
• kernel-rt: kernel: use-after-free in amdgpu_cs_wait_all_fences in drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (JIRA:RHEL-24498)
• kernel-rt: kernel: GSM multiplexing race condition leads to privilege escalation (JIRA:RHEL-19966)
• kernel-rt: kernel: ext4: kernel bug in ext4_write_inline_data_end() (JIRA:RHEL-26334)

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 8 x86_64
• Red Hat Enterprise Linux for Real Time for NFV 8 x86_64

Fixes

• BZ - 2133452 - CVE-2022-38096 kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query
• 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 - 2255498 - CVE-2023-6546 kernel: GSM multiplexing race condition leads to privilege escalation
• BZ - 2258518 - CVE-2024-0565 kernel: CIFS Filesystem Decryption Improper Input Validation Remote Code Execution Vulnerability in function receive_encrypted_standard of client
• 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 - 2261976 - CVE-2021-33631 kernel: ext4: kernel bug in ext4_write_inline_data_end()
• BZ - 2262126 - CVE-2024-1086 kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function

CVEs

• CVE-2021-33631
• CVE-2022-38096
• CVE-2023-6546
• CVE-2023-6931
• CVE-2023-51042
• CVE-2024-0565
• CVE-2024-1086

References

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