CVE-2025-12464
Published: November 1, 2025Last modified: August 14, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.2 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | qemu | Unknown (9.0.2-r0) |
| 25 LTS | qemu | Fixed (10.0.9-r0) | |
| Stream | qemu | Fixed (10.2.0-r0) |
References
- https://access.redhat.com/security/cve/CVE-2025-12464
- https://bugzilla.redhat.com/show_bug.cgi?id=2408845
- https://gitlab.com/qemu-project/qemu/-/issues/3043
- https://lore.kernel.org/qemu-devel/[email protected]/T/#u
- https://gitlab.com/qemu-project/qemu/-/commit/a01344d9d78089e9e585faaeb19afccff2050abf
- https://gitlab.com/qemu-project/qemu/-/commit/134f0c58547bc680732a9fc7556329134ef81dee