1. Home
  2. Security Advisories
  3. Red Hat
  4. RHSA-2021:5241

[RHSA-2021:5241] kernel-rt security and bug fix update

Severity Moderate
Affected Packages 12
CVEs 1
Info Packages References Vulnerabilities

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: In Overlayfs missing a check for a negative dentry before calling vfs_rename() (CVE-2021-20321)

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 RHEL-8.5.z1 source tree (BZ#2023988)

  • [rt] RHEL-8.6: disable KASAN, KCSAN and UBSAN for kernel-rt (BZ#2026384)

Package Affected Version
pkg:rpm/redhat/kernel-rt?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-modules?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-modules-extra?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-kvm?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-devel?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-debug?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-debug-modules?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-debug-modules-extra?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-debug-kvm?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-debug-devel?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-debug-core?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
pkg:rpm/redhat/kernel-rt-core?arch=x86_64&distro=redhat-8.5 < 4.18.0-348.7.1.rt7.137.el8_5
ID
RHSA-2021:5241
Severity
moderate
URL
https://access.redhat.com/errata/RHSA-2021:5241
Published
2021-12-21T00:00:00
(2 years ago)
Modified
2021-12-21T00:00:00
(2 years ago)
Rights
Copyright 2021 Red Hat, Inc.
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:rpm/redhat/kernel-rt?arch=x86_64&distro=redhat-8.5 redhat kernel-rt < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-modules?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-modules < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-modules-extra?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-modules-extra < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-kvm?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-kvm < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-devel?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-devel < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-debug?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-debug < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-debug-modules?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-debug-modules < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-debug-modules-extra?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-debug-modules-extra < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-debug-kvm?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-debug-kvm < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-debug-devel?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-debug-devel < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-debug-core?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-debug-core < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
Affected pkg:rpm/redhat/kernel-rt-core?arch=x86_64&distro=redhat-8.5 redhat kernel-rt-core < 4.18.0-348.7.1.rt7.137.el8_5 redhat-8.5 x86_64
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date