CVE-2022-0185

 

Published at: - 11-02-2022 07:15

Last modified: - 17-01-2023 10:24

Total changes: - 9

Description

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/Crusaders-of-Rust/CVE-2022-0185
• https://www.openwall.com/lists/oss-security/2022/01/18/7
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2
• https://www.willsroot.io/2022/01/cve-2022-0185.html
• https://security.netapp.com/advisory/ntap-20220225-0003/

 

Keywords

NVD

 

CVE-2022-0185

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures