RHSA-2024:6990 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: mm/sparsemem: fix race in accessing memory_section->usage (CVE-2023-52489)
• kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs (CVE-2021-47393)
• kernel: net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk() (CVE-2021-47559)
• kernel: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." (CVE-2024-40984)
• kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() (CVE-2024-40995)
• kernel: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create (CVE-2022-48773)
• kernel: vsock: remove vsock from connected table when connect is interrupted by a signal (CVE-2022-48786)
• kernel: perf: Fix list corruption in perf_cgroup_switch() (CVE-2022-48799)
• kernel: SUNRPC: lock against ->sock changing during sysfs read (CVE-2022-48816)
• kernel: mm: prevent derefencing NULL ptr in pfn_section_valid() (CVE-2024-41055)
• kernel: wifi: mac80211: Avoid address calculations via out of bounds array indexing (CVE-2024-41071)

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 9.0 x86_64
• Red Hat Enterprise Linux for Real Time for NFV for x86_64 - 4 years of updates 9.0 x86_64

Fixes

• BZ - 2269189 - CVE-2023-52489 kernel: mm/sparsemem: fix race in accessing memory_section->usage
• BZ - 2282345 - CVE-2021-47393 kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs
• BZ - 2283390 - CVE-2021-47559 kernel: net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk()
• BZ - 2297568 - CVE-2024-40984 kernel: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
• BZ - 2297579 - CVE-2024-40995 kernel: net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()
• BZ - 2298109 - CVE-2022-48773 kernel: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create
• BZ - 2298122 - CVE-2022-48786 kernel: vsock: remove vsock from connected table when connect is interrupted by a signal
• BZ - 2298135 - CVE-2022-48799 kernel: perf: Fix list corruption in perf_cgroup_switch()
• BZ - 2298155 - CVE-2022-48816 kernel: SUNRPC: lock against ->sock changing during sysfs read
• BZ - 2300429 - CVE-2024-41055 kernel: mm: prevent derefencing NULL ptr in pfn_section_valid()
• BZ - 2300448 - CVE-2024-41071 kernel: wifi: mac80211: Avoid address calculations via out of bounds array indexing

CVEs

• CVE-2021-47393
• CVE-2021-47559
• CVE-2022-48773
• CVE-2022-48786
• CVE-2022-48799
• CVE-2022-48816
• CVE-2023-52489
• CVE-2024-40984
• CVE-2024-40995
• CVE-2024-41055
• CVE-2024-41071

References

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