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Debian: CVE-2019-19813: linux, linux-4.19 -- security update

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Debian: CVE-2019-19813: linux, linux-4.19 -- security update

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
12/17/2019
Created
09/28/2020
Added
09/28/2020
Modified
03/10/2021

Description

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.

Solution(s)

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

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