Use After Free Affecting torvalds/linux package, versions [,5.4.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.48% (64th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006673
  • published26 Jan 2022
  • disclosed12 Dec 2019
  • creditUnknown

Introduced: 12 Dec 2019

CVE-2019-19767  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.4.2 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free. The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.

CVSS Base Scores

version 3.1