CVE Vulnerabilities

CVE-2021-46021

Use After Free

Published: Jan 14, 2022 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
LOW

An Use-After-Free vulnerability in rec_record_destroy() at rec-record.c of GNU Recutils v1.8.90 can lead to a segmentation fault or application crash.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Recutils Gnu 1.8.90 (including) 1.8.90 (including)
Recutils Ubuntu bionic *
Recutils Ubuntu esm-apps/bionic *
Recutils Ubuntu esm-apps/focal *
Recutils Ubuntu esm-apps/jammy *
Recutils Ubuntu esm-apps/xenial *
Recutils Ubuntu focal *
Recutils Ubuntu impish *
Recutils Ubuntu jammy *
Recutils Ubuntu kinetic *
Recutils Ubuntu lunar *
Recutils Ubuntu mantic *
Recutils Ubuntu trusty *
Recutils Ubuntu upstream *
Recutils Ubuntu xenial *

Potential Mitigations

References