Out-of-bounds Read in Qemu
CVE-2022-4144
An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.
Vulnerability class: Buffer Overflow
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 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% 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
- Qemu
- Fedoraproject Extra Packages For Enterprise Linux — versions 8.0
- Fedoraproject Fedora — versions 37
- Red Hat Enterprise Linux — versions 8.0
- Qemu (Qxl Device) — versions affects versions up to latest v7.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html (Patch, Mailing List, 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.netapp.com/advisory/ntap-20230127-0012/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-4144?
- CVE-2022-4144 is a medium-severity vulnerability in Qemu, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2022-11-29.
- How severe is CVE-2022-4144?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2022-4144 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.