SARA / Free Tools / CVE / CVE-2022-4144

CVE-2022-4144 — An out-of-bounds read flaw was found in the QXL display device emulation in QEMU

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 gue

CVSS
— —
EPSS
0.02% (top 94.80%)
CWE
CWE-125
Published
2022-11-29T00:00:00.000Z
Last modified
2025-04-14T18:09:55.614Z
CVSS vector
—

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
na / QEMU (QXL device)affects versions up to latest v7.1.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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