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CVE-2022-0185

8.4
HIGHCVSS v3.1 Base Score
2.00%
LOW RiskEPSS (84th percentile)
KEV

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.

Published: 2/11/2022
Modified: 11/6/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Linux Kernel Heap-Based Buffer Overflow Vulnerability

Vendor / Product:

Linux Kernel

Required Action:

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Due Date: 9/11/2024(OVERDUE)
Added to KEV:

8/21/2024

Notes:

This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=722d94847de2; https://nvd.nist.gov/vuln/detail/CVE-2022-0185

Vulnerability Summary

CVSS v3 Score

8.4HIGH

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

CVSS v2 Score

7.2

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Score (Exploitation Probability)

2.00%LOW Exploitation Risk
84th percentile

This vulnerability has a 2.00% probability of being exploited in the next 30 days, ranking higher than 84% of all scored CVEs.

CWE Classification

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Similar SeverityHIGH