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prionPRIOn knowledge basePRION:CVE-2022-0185
HistoryFeb 11, 2022 - 6:15 p.m.

Heap overflow

2022-02-1118:15:00
PRIOn knowledge base
www.prio-n.com
15
heap overflow
linux kernel
buffer overflow
filesystem context
privilege escalation
vulnerability

AI Score

7.9

Confidence

High

EPSS

0.001

Percentile

25.6%

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.