CISA KEV · Known exploitedHigh

CVE-2022-0185

Linux Kernel

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.

CVSS: 8.4
EPSS: 25.2%
CISA KEV: Listed
Published: 2022.02.12

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability25.2%

Technical severityCVSS 8.4

Vulnerability overview

Affected product and versions

Product: Linux Kernel
Affected versions: 8.4, >= 5.1 < 5.4.173, >= 5.5 < 5.10.93, >= 5.11 < 5.15.16, >= 5.16 < 5.16.2
Fixed versions: 5.4.173, 5.10.93, 5.15.16, 5.16.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

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

Due date: 2024.09.11

1
Identify
Confirm that Linux Kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-190, CWE-191
KEV added: 2024.08.21
Ransomware use: 미확인