CVE-2022-0185
CVE-2022-0185 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 8.4. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2024-08-21). The underlying weakness is classified as CWE-191.
Key facts
- Severity: High (CVSS 3.x base score 8.4)
- CVSS v2: 7.2
- EPSS exploit prediction: 25% (98th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2024-08-21)
- EU (EUVD) id: EUVD-2022-15389
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2024-08-21)
- Weakness: CWE-191
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2022-0185?
- 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.
- How severe is CVE-2022-0185?
- CVE-2022-0185 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-0185 being actively exploited?
- Yes. CVE-2022-0185 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-08-21, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2022-0185?
- CVE-2022-0185 primarily affects Linux Linux Kernel. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-0185?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2022-0185 have an EU (EUVD) identifier?
- Yes. CVE-2022-0185 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-15389. It is also flagged as exploited in the EUVD (since 2024-08-21).
- When was CVE-2022-0185 published?
- CVE-2022-0185 was published on 2022-02-11 and last updated on 2026-06-17.
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2
- https://github.com/Crusaders-of-Rust/CVE-2022-0185
- https://security.netapp.com/advisory/ntap-20220225-0003/
- https://www.openwall.com/lists/oss-security/2022/01/18/7
- https://www.willsroot.io/2022/01/cve-2022-0185.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0185
Affected products (9)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
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