Vulnerability in FreeBSD
CVE-2022-23091
A particular case of memory sharing is mishandled in the virtual memory system. This is very similar to SA-21:08.vm, but with a different root cause. An unprivileged local user process can maintain a mapping of a page after it is freed, allowing that process to read private data belonging to other processes or the kernel.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- FreeBSD — versions 13.1, 12.3-RELEASE, 13.0-RELEASE
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.freebsd.org/advisories/FreeBSD-SA-22:11.vm.asc (vendor-advisory, Vendor Advisory)
- security.netapp.com/advisory/ntap-20240415-0008/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-23091?
- CVE-2022-23091 is a medium-severity vulnerability in FreeBSD, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 4.0/10. Published 2024-02-15.
- How severe is CVE-2022-23091?
- Medium severity. CVSS v3 base score is 4.0 out of 10.
- Is CVE-2022-23091 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.