CVE-2020-29534 Affecting torvalds/linux package, versions [5.1,5.8.18)[5.9.0,5.9.3)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006725
  • published26 Jan 2022
  • disclosed3 Dec 2020
  • creditUnknown

Introduced: 3 Dec 2020

CVE-2020-29534  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.8.18, 5.9.3 or higher.

Overview

An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.

References

CVSS Base Scores

version 3.1