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Ubuntu: USN-4680-1 (CVE-2019-19770): Linux kernel vulnerabilities

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Ubuntu: USN-4680-1 (CVE-2019-19770): Linux kernel vulnerabilities

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
12/12/2019
Created
01/08/2021
Added
01/06/2021
Modified
07/06/2021

Description

** DISPUTED ** In the Linux kernel 4.19.83, there is a use-after-free (read) in the debugfs_remove function in fs/debugfs/inode.c (which is used to remove a file or directory in debugfs that was previously created with a call to another debugfs function such as debugfs_create_file). NOTE: Linux kernel developers dispute this issue as not being an issue with debugfs, instead this is an issue with misuse of debugfs within blktrace.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1062-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1077-gke
  • ubuntu-upgrade-linux-image-4-15-0-1077-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1082-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1091-aws
  • ubuntu-upgrade-linux-image-4-15-0-1091-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1094-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1103-azure
  • ubuntu-upgrade-linux-image-4-15-0-129-generic
  • ubuntu-upgrade-linux-image-4-15-0-129-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-129-lowlatency
  • 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

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