[Security Advisory] ALSA-2023:1584: kernel-rt security and bug fix update (Important)
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AlmaLinux: 8 Type: Security Severity: Important Release date: 2023-04-12
Summary:
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: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378) * ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266) * kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386) * kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)
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):
* Lazy irq_work does not raise softirq on PREEMPT_RT [rhel-8] (BZ#2172163) * The latest AlmaLinux 8.7.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2172278)
Full details, updated packages, references, and other related information: https://errata.almalinux.org/8/ALSA-2023-1584.html
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Kind regards, AlmaLinux Team
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