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osvGoogleOSV:RLSA-2022:0819
HistoryMar 10, 2022 - 2:37 p.m.

Important: kernel-rt security and bug fix update

2022-03-1014:37:54
Google
osv.dev
11
real time linux kernel
security fix
bug fix
cve-2022-0847
cve-2021-0920
cve-2021-4154
cve-2022-0330
cve-2022-0435
cve-2022-0492
cve-2022-22942
kernel symbol
rt source tree
rocky linux-8.5.z3

AI Score

9

Confidence

High

EPSS

0.121

Percentile

95.4%

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: improper initialization of the β€œflags” member of the new pipe_buffer (CVE-2022-0847)

  • kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)

  • kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)

  • kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)

  • kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435)

  • kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)

  • kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)

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):

  • kernel symbol β€˜__rt_mutex_init’ is exported GPL-only in kernel 4.18.0-348.2.1.rt7.132.el8_5 (BZ#2038423)

  • kernel-rt: update RT source tree to the Rocky Linux-8.5.z3 source tree (BZ#2045589)