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Debian: CVE-2019-19448: linux, linux-4.19 -- security update

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Debian: CVE-2019-19448: linux, linux-4.19 -- security update

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
12/08/2019
Created
09/28/2020
Added
09/28/2020
Modified
11/02/2020

Description

In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.

Solution(s)

  • debian-upgrade-linux
  • debian-upgrade-linux-4-19

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