CVE-2022-0185

high-risk
Published 2022-02-11

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.

Do I need to act?

~
2.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.4/10 High
LOCAL / LOW complexity

Affected Products (9)

Affected Vendors

Linux Netapp

References (11)

Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=72...
Exploit https://github.com/Crusaders-of-Rust/CVE-2022-0185
Third Party Advisory https://security.netapp.com/advisory/ntap-20220225-0003/
Mailing List https://www.openwall.com/lists/oss-security/2022/01/18/7
Exploit https://www.willsroot.io/2022/01/cve-2022-0185.html
Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=72...
Exploit https://github.com/Crusaders-of-Rust/CVE-2022-0185
Third Party Advisory https://security.netapp.com/advisory/ntap-20220225-0003/
Mailing List https://www.openwall.com/lists/oss-security/2022/01/18/7
Exploit https://www.willsroot.io/2022/01/cve-2022-0185.html
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-...
53
/ 100
high-risk
Severity 26/34 · High
Exploitability 12/34 · Low
Exposure 15/34 · Moderate