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Ubuntu: (Multiple Advisories) (CVE-2021-3739): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-3739): Linux kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:P)
Published
09/16/2021
Created
10/28/2021
Added
10/20/2021
Modified
03/22/2023

Description

A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.

Solution(s)

  • ubuntu-upgrade-linux-image-5-10-0-1050-oem
  • ubuntu-upgrade-linux-image-5-11-0-1018-kvm
  • ubuntu-upgrade-linux-image-5-11-0-1020-aws
  • ubuntu-upgrade-linux-image-5-11-0-1020-azure
  • ubuntu-upgrade-linux-image-5-11-0-1020-oracle
  • ubuntu-upgrade-linux-image-5-11-0-1021-gcp
  • ubuntu-upgrade-linux-image-5-11-0-1021-raspi
  • ubuntu-upgrade-linux-image-5-11-0-1021-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-11-0-38-generic
  • ubuntu-upgrade-linux-image-5-11-0-38-generic-64k
  • ubuntu-upgrade-linux-image-5-11-0-38-generic-lpae
  • ubuntu-upgrade-linux-image-5-11-0-38-lowlatency
  • ubuntu-upgrade-linux-image-5-13-0-1017-oem
  • ubuntu-upgrade-linux-image-5-4-0-1007-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1021-bluefield
  • ubuntu-upgrade-linux-image-5-4-0-1026-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1046-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1049-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1055-gke
  • ubuntu-upgrade-linux-image-5-4-0-1057-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1057-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1059-aws
  • ubuntu-upgrade-linux-image-5-4-0-1063-azure
  • ubuntu-upgrade-linux-image-5-4-0-90-generic
  • ubuntu-upgrade-linux-image-5-4-0-90-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-90-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-lts-20-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-edge
  • ubuntu-upgrade-linux-image-azure-lts-20-04
  • ubuntu-upgrade-linux-image-bluefield
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-20-04
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-64k
  • ubuntu-upgrade-linux-image-generic-64k-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-5-4
  • ubuntu-upgrade-linux-image-gkeop
  • ubuntu-upgrade-linux-image-gkeop-5-4
  • ubuntu-upgrade-linux-image-ibm
  • ubuntu-upgrade-linux-image-ibm-lts-20-04
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oem-20-04c
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-20-04
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-hwe-18-04
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04

References

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