A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
References
| Link | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2036998 | Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-27 | Third Party Advisory |
| https://starlabs.sg/advisories/21-4206/ | Exploit Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5133 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2036998 | Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-27 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20250321-0010/ | |
| https://starlabs.sg/advisories/21-4206/ | Exploit Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5133 | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
Configuration 3 (hide)
|
History
21 Mar 2025, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Information
Published : 2022-04-29 17:15
Updated : 2025-03-21 18:15
NVD link : CVE-2021-4206
Mitre link : CVE-2021-4206
CVE.ORG link : CVE-2021-4206
JSON object : View
Products Affected
qemu
- qemu
redhat
- enterprise_linux
debian
- debian_linux