CVE-2022-0185
Linux Kernel Heap-Based Buffer Overflow Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 11 September 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 25.15% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 21 August 2024 · due 11 September 2024
- Weakness
- CWE-190, CWE-191
- Affected
- linux/linux kernel · netapp/h410c firmware · netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h300e firmware · netapp/h500e firmware · netapp/h700e firmware · netapp/h410s firmware
- Source
- secalert@redhat.com
EPSS 25.2% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. 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
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2Mailing List, Patch
- https://github.com/Crusaders-of-Rust/CVE-2022-0185Exploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220225-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/01/18/7Mailing List, Patch, Third Party Advisory
- https://www.willsroot.io/2022/01/cve-2022-0185.htmlExploit, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2Mailing List, Patch
- https://github.com/Crusaders-of-Rust/CVE-2022-0185Exploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220225-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/01/18/7Mailing List, Patch, Third Party Advisory
- https://www.willsroot.io/2022/01/cve-2022-0185.htmlExploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0185US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.