CVE-2022-0185: Linux Kernel Heap-Based Buffer Overflow Vulnerability

CVE-2022-0185 · Severity: critical · CVSS 8.4 · Exploited in the wild · Published 2024-08-21

A heap-based buffer overflow vulnerability exists in the legacy_parse_param function within the Linux kernel's Filesystem Context functionality. The flaw occurs during the verification of parameter lengths when falling back to legacy handling for filesystems that do not support the Filesystem Context API. A local attacker can exploit this to escalate privileges, particularly in environments where unprivileged user namespaces are enabled.

Technologies: Linux Kernel. Vendors: Linux.

Quick answers

Is CVE-2022-0185 exploited in the wild?
Yes. CVE-2022-0185 is known to be exploited in the wild, first recorded on 21 August 2024. Treat it as urgent.
How severe is CVE-2022-0185?
Critical severity, with a CVSS score of 8.4, published 21 August 2024.
Which products and versions are affected?
Linux Linux Kernel.
Is there a fix for CVE-2022-0185?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2022-0185 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2022-0185?
Check whether you run Linux Kernel. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Linux Linux Kernel

Timeline

  • 2022-01-18: disclosed: Initial disclosure on oss-security mailing list
  • 2024-08-21: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2024-09-11: other: CISA KEV due date for remediation

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