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
EPSS: 0.003 (20.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Qemu
- Fedoraproject Extra_packages_for_enterprise_linux — versions 8.0
- Fedoraproject Fedora — versions 37
- Redhat Enterprise_linux — versions 8.0
- N/a Qemu (Qxl Device) — versions affects versions up to latest v7.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (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.