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Ubuntu: USN-5162-1 (CVE-2021-43057): Linux kernel vulnerabilities

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Ubuntu: USN-5162-1 (CVE-2021-43057): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
10/28/2021
Created
03/29/2023
Added
03/22/2023
Modified
03/22/2023

Description

An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.

Solution(s)

  • ubuntu-upgrade-linux-image-5-13-0-1006-kvm
  • ubuntu-upgrade-linux-image-5-13-0-1007-aws
  • ubuntu-upgrade-linux-image-5-13-0-1007-gcp
  • ubuntu-upgrade-linux-image-5-13-0-1008-azure
  • ubuntu-upgrade-linux-image-5-13-0-1010-oracle
  • ubuntu-upgrade-linux-image-5-13-0-1011-raspi
  • ubuntu-upgrade-linux-image-5-13-0-1011-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-13-0-1020-oem
  • ubuntu-upgrade-linux-image-5-13-0-22-generic
  • ubuntu-upgrade-linux-image-5-13-0-22-generic-64k
  • ubuntu-upgrade-linux-image-5-13-0-22-generic-lpae
  • ubuntu-upgrade-linux-image-5-13-0-22-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-64k
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04c
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-virtual

References

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