RHSA-2024:6745 - 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 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: Bluetooth: af_bluetooth: Fix deadlock (CVE-2024-26886)
• kernel: crypto: qat - resolve race condition during AER recovery (CVE-2024-26974)
• kernel: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc (CVE-2023-52880)
• kernel: cpufreq: exit() callback is optional (CVE-2024-38615)
• kernel: cppc_cpufreq: Fix possible null pointer dereference (CVE-2024-38573)
• kernel: scsi: qedf: Ensure the copied buf is NUL terminated (CVE-2024-38559)
• kernel: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." (CVE-2024-40984)
• kernel: sched/deadline: Fix task_struct reference leak (CVE-2024-41023)
• kernel: mm/filemap: skip to create PMD-sized page cache if needed (CVE-2024-41031)
• kernel: mm/shmem: disable PMD-sized page cache if needed (CVE-2024-42241)
• kernel: mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray (CVE-2024-42243)
• kernel: net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket (CVE-2024-42246)

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 - 2275678 - CVE-2024-26886 kernel: Bluetooth: af_bluetooth: Fix deadlock
• BZ - 2278354 - CVE-2024-26974 kernel: crypto: qat - resolve race condition during AER recovery
• BZ - 2283468 - CVE-2023-52880 kernel: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc
• BZ - 2293348 - CVE-2024-38615 kernel: cpufreq: exit() callback is optional
• BZ - 2293420 - CVE-2024-38573 kernel: cppc_cpufreq: Fix possible null pointer dereference
• BZ - 2293440 - CVE-2024-38559 kernel: scsi: qedf: Ensure the copied buf is NUL terminated
• BZ - 2297568 - CVE-2024-40984 kernel: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
• BZ - 2300381 - CVE-2024-41023 kernel: sched/deadline: Fix task_struct reference leak
• BZ - 2300395 - CVE-2024-41031 kernel: mm/filemap: skip to create PMD-sized page cache if needed

CVEs

• CVE-2023-52880
• CVE-2024-26886
• CVE-2024-26974
• CVE-2024-38559
• CVE-2024-38573
• CVE-2024-38615
• CVE-2024-40984
• CVE-2024-41023
• CVE-2024-41031
• CVE-2024-42241
• CVE-2024-42243
• CVE-2024-42246

References

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