Use After Free Affecting torvalds/linux package, versions [0,]


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.17% (56th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006666
  • published26 Jan 2022
  • disclosed8 Dec 2019
  • creditUnknown

Introduced: 8 Dec 2019

CVE-2019-19448  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for torvalds/linux.

Overview

Affected versions of this package are vulnerable to Use After Free. 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.

References

CVSS Scores

version 3.1