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CVE-2021-31873

nvd nist
Published: Apr 30, 2021Modified: Jun 17, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

Description

An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.

Affected (2)

Klibc Project
1 product
Klibc
Debian
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Klibc
Before 2.0.9
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 9.0

Related CWEs

CWE-190
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 (12)

Source: cve@mitre.org
Mailing ListRelease NotesThird Party Advisory
Source: cve@mitre.org
PatchThird Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Release NotesThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Mailing ListRelease NotesThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListRelease NotesThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListRelease NotesThird Party Advisory

Timeline

No history available yet.