Use After Free in Linux Kernel
CVE-2022-0646
A flaw use after free in the Linux kernel Management Component Transport Protocol (MCTP) subsystem was found in the way user triggers cancel_work_sync after the unregister_netdev during removing device. A local user could use this flaw to crash the system or escalate their privileges on the system. It is actual from Linux Kernel 5.17-rc1 (when mctp-serial.c introduced) till 5.17-rc5.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (26.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- lore.kernel.org/all/20220211011552.1861886-1-jk@codeconstruct.com.au (Patch, Mailing List)
- security.netapp.com/advisory/ntap-20220318-0006/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-0646?
- CVE-2022-0646 is a high-severity vulnerability in Linux Kernel, classified under Incomplete Cleanup. CVSS score: 7.8/10. Published 2022-02-18.
- How severe is CVE-2022-0646?
- High severity. CVSS v3 base score is 7.8 out of 10.