CVE-2021-4206
High
Description
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.
SeverityHigh
CVSS8.2
Exploit probability—
Product
Qemu
PublishedApr 29, 2022
First seenApr 29, 2022
Weakness typeCWE-190Integer overflow
How to fix
Update
- qemu qemu7.0.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | v < 7.0.0 | 7.0.0 |
| redhat enterprise_linux | 8.0 | — |
| debian debian_linux | 10.0, 11.0 | — |
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