CVE-2021-3428

Published: Mar 4, 2022Modified: Jun 17, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

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.

Affected (1)

Products: Linux: Linux Kernel

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	Before 5.9.0

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (6)

https://bugzilla.redhat.com/show_bug.cgi?id=1972621

Source: secalert@redhat.com

Issue TrackingPermissions RequiredThird Party Advisory

https://ubuntu.com/security/CVE-2021-3428

Source: secalert@redhat.com

Third Party Advisory

https://www.openwall.com/lists/oss-security/2021/03/17/1

Source: secalert@redhat.com

Mailing ListThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1972621

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPermissions RequiredThird Party Advisory

https://ubuntu.com/security/CVE-2021-3428

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.openwall.com/lists/oss-security/2021/03/17/1

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

No history available yet.