Important: kernel-rt security and bug fix update
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/mremap.c use-after-free vulnerability (CVE-2022-41222) * kernel: nfsd buffer overflow by RPC message over TCP with garbage data (CVE-2022-43945) * kernel: an out-of-bounds vulnerability in i2c-ismt driver (CVE-2022-2873) 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. Bug Fix(es): * AlmaLinux8-RT: Backport use of a dedicate thread for timer wakeups (BZ#2127204) * SNO Crashed twice - kernel BUG at lib/list_debug.c:28 (BZ#2132062) * Cannot trigger kernel dump using NMI on SNO node running PAO and RT kernel [RT-8] (BZ#2139851) * scheduling while atomic in fpu_clone() -> fpu_inherit_perms() (BZ#2154469) * The latest AlmaLinux 8.7.z2 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2159806)
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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/mremap.c use-after-free vulnerability (CVE-2022-41222) * kernel: nfsd buffer overflow by RPC message over TCP with garbage data (CVE-2022-43945) * kernel: an out-of-bounds vulnerability in i2c-ismt driver (CVE-2022-2873) 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. Bug Fix(es): * AlmaLinux8-RT: Backport use of a dedicate thread for timer wakeups (BZ#2127204) * SNO Crashed twice - kernel BUG at lib/list_debug.c:28 (BZ#2132062) * Cannot trigger kernel dump using NMI on SNO node running PAO and RT kernel [RT-8] (BZ#2139851) * scheduling while atomic in fpu_clone() -> fpu_inherit_perms() (BZ#2154469) * The latest AlmaLinux 8.7.z2 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2159806)
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2023:0854
- https://access.redhat.com/security/cve/CVE-2022-2873
- https://access.redhat.com/security/cve/CVE-2022-41222
- https://access.redhat.com/security/cve/CVE-2022-43945
- https://bugzilla.redhat.com/2119048
- https://bugzilla.redhat.com/2138818
- https://bugzilla.redhat.com/2141752
- https://errata.almalinux.org/8/ALSA-2023-0854.html