Integer Overflow or Wraparound Affecting linux-4.19 package, versions <4.19.181-1~deb9u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-DEBIAN9-LINUX419-1089631
  • published15 Mar 2021
  • disclosed4 Mar 2022

Introduced: 15 Mar 2021

CVE-2021-3428  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Debian:9 linux-4.19 to version 4.19.181-1~deb9u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.19 package and not the linux-4.19 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat.

CVSS Base Scores

version 3.1