Out-of-bounds Write Affecting torvalds/linux package, versions [,5.16-rc2)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.12% (33rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-2932156
  • published20 Jun 2022
  • disclosed20 Jun 2022
  • creditPedro Sampaio

Introduced: 20 Jun 2022

CVE-2021-4090  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.16-rc2 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Write due to missing sanitization in nfsd4_decode_bitmap4 function in fs/nfsd/nfs4xdr.c. Exploiting this vulnerability may lead to a write beyond bmval[bmlen-1].

CVSS Base Scores

version 3.1