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Ubuntu: USN-4678-1 (CVE-2020-29534): Linux kernel vulnerabilities

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Ubuntu: USN-4678-1 (CVE-2020-29534): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
12/03/2020
Created
01/08/2021
Added
01/06/2021
Modified
03/22/2023

Description

An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.

Solution(s)

  • ubuntu-upgrade-linux-image-5-8-0-1011-raspi
  • ubuntu-upgrade-linux-image-5-8-0-1011-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-8-0-1014-kvm
  • ubuntu-upgrade-linux-image-5-8-0-1014-oracle
  • ubuntu-upgrade-linux-image-5-8-0-1015-gcp
  • ubuntu-upgrade-linux-image-5-8-0-1016-azure
  • ubuntu-upgrade-linux-image-5-8-0-1017-aws
  • ubuntu-upgrade-linux-image-5-8-0-34-generic
  • ubuntu-upgrade-linux-image-5-8-0-34-generic-64k
  • ubuntu-upgrade-linux-image-5-8-0-34-generic-lpae
  • ubuntu-upgrade-linux-image-5-8-0-34-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-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04

References

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