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Amazon Linux AMI: CVE-2019-19448: Security patch for kernel (ALAS-2020-1437)

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Amazon Linux AMI: CVE-2019-19448: Security patch for kernel (ALAS-2020-1437)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
12/08/2019
Created
10/29/2020
Added
10/28/2020
Modified
10/14/2022

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)

  • amazon-linux-upgrade-kernel

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