A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3099-1 | qemu security update |
Debian DSA |
DSA-5133-1 | qemu security update |
EUVD |
EUVD-2021-34065 | A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. |
Ubuntu USN |
USN-5489-1 | QEMU vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 21 Mar 2025 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-03-21T18:03:41.449Z
Reserved: 2022-01-13T00:00:00.000Z
Link: CVE-2021-4207
No data.
Status : Modified
Published: 2022-04-29T17:15:20.100
Modified: 2025-03-21T18:15:28.397
Link: CVE-2021-4207
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN