CVE-2025-12464
Medium
Description
A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individual network devices and moved to the net core code. The issue stems from the device's receive code still being able to process a short frame in loopback mode. This could lead to a buffer overrun in the e1000_receive_iov() function via the loopback code path. A malicious guest user could use this vulnerability to crash the QEMU process on the host, resulting in a denial of service.
SeverityMedium
CVSS6.2
Exploit probability—
Product
Qemu
PublishedOct 31, 2025
First seenOct 31, 2025
Weakness typeCWE-121CWE-121
How to fix
Update
- qemu10.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu | 8.1.0 ≤ v < 10.1.3 | 10.1.3 |
| Red Hat Red Hat Enterprise Linux 10 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 9 | No range specified | — |
| Red Hat Red Hat OpenShift Container Platform 4 | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.