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.
References (6)
Core 6
Core References
Mailing List, Release Notes, Third Party Advisory mailing-list
http://www.openwall.com/lists/oss-security/2021/04/30/1
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html
Patch, Third Party Advisory
https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=a31ae8c508fc8d1bca4f57e9f9f88127572d5202
Release Notes, Third Party Advisory
https://kernel.org/pub/linux/libs/klibc/2.0/
Mailing List, Release Notes, Third Party Advisory
https://lists.zytor.com/archives/klibc/2021-April/004593.html
Scores
CVSS v3
9.8
EPSS
0.0089
EPSS Percentile
75.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-190
Status
published
Products (2)
debian/debian_linux
9.0
klibc_project/klibc
< 2.0.9
Published
Apr 30, 2021
Tracked Since
Feb 18, 2026