CVE Vulnerabilities

CVE-2021-4192

Use After Free

Published: Dec 31, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
7.8 MODERATE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

vim is vulnerable to Use After Free

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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
Vim Vim * 8.2.3949 (excluding)
Red Hat Enterprise Linux 8 RedHat vim-2:8.0.1763-16.el8_5.4 *
Red Hat Enterprise Linux 8 RedHat vim-2:8.0.1763-16.el8_5.4 *
Vim Ubuntu bionic *
Vim Ubuntu esm-infra-legacy/trusty *
Vim Ubuntu esm-infra/bionic *
Vim Ubuntu esm-infra/focal *
Vim Ubuntu esm-infra/xenial *
Vim Ubuntu focal *
Vim Ubuntu hirsute *
Vim Ubuntu impish *
Vim Ubuntu trusty *
Vim Ubuntu trusty/esm *
Vim Ubuntu upstream *
Vim Ubuntu xenial *

Potential Mitigations

References