Vulnerability in Xen
CVE-2022-33746
P2M pool freeing may take excessively long The P2M pool backing second level address translation for guests may be of significant size. Therefore its freeing may take more time than is reasonable without intermediate preemption checks. Such checking for the need to preempt was so far missing.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.9% 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: 0.003 · change: +0.000
Affected products
- Xen — versions consult Xen advisory XSA-410
- Debian Linux — versions 11.0
- Fedoraproject Fedora — versions 35, 36, 37
Weakness classification (CWE)
Public proof-of-concept exploits
References
- xenbits.xenproject.org/xsa/advisory-410.txt (Patch, Mitigation, Vendor Advisory)
- xenbits.xen.org/xsa/advisory-410.html (Patch, Mitigation, Vendor Advisory)
- www.openwall.com/lists/oss-security/2022/10/11/3 (mailing-list, Patch, Mailing List, Third Party Advisory, Mitigation)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2022/dsa-5272 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202402-07 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-33746?
- CVE-2022-33746 is a medium-severity vulnerability in Xen, classified under Improper Resource Shutdown or Release. CVSS score: 6.5/10. Published 2022-10-11.
- How severe is CVE-2022-33746?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2022-33746 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.