RLSA-2021:3088

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Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2021:3088.json
JSON Data
https://api.osv.dev/v1/vulns/RLSA-2021:3088
Related
Published
2021-08-10T12:10:45Z
Modified
2023-02-02T14:11:07.543769Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Important: kernel-rt security and bug fix update
Details

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: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)

  • kernel: Improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)

  • kernel: out-of-bounds write in xtcompattargetfromuser() in net/netfilter/x_tables.c (CVE-2021-22555)

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-rt: update RT source tree to the Rocky Linux-8.4.z source tree (BZ#1985050)

  • kernel-rt: Merge mm/memcg: Fix kmemcachealloc() performance regression (BZ#1987102)

References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:8 / kernel-rt

Package

Name
kernel-rt
Purl
pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8-4-legacy&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0:4.18.0-305.12.1.rt7.84.el8_4