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Ubuntu: (Multiple Advisories) (CVE-2019-19039): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2019-19039): Linux kernel vulnerabilities

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:N)
Published
11/21/2019
Created
08/07/2020
Added
08/05/2020
Modified
11/07/2024

Description

__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1046-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1048-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1064-gke
  • ubuntu-upgrade-linux-image-4-15-0-1065-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1069-kvm
  • ubuntu-upgrade-linux-image-4-15-0-107-generic
  • ubuntu-upgrade-linux-image-4-15-0-107-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-107-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-1074-aws
  • ubuntu-upgrade-linux-image-4-15-0-1077-aws
  • ubuntu-upgrade-linux-image-4-15-0-1078-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1081-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-109-generic
  • ubuntu-upgrade-linux-image-4-15-0-109-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-109-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-1091-azure
  • ubuntu-upgrade-linux-image-4-15-0-1091-oem
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-18-04
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-16-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-4-15
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-16-04

References

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