Vulnerability · Published Oct 31, 2025 · Assigned by redhat
CVE-2025-12464Qemu-kvm: stack buffer overflow in e1000 device via short frames in loopback mode
Medium 6.2
In plain English
A medium-severity stack buffer overflow in qemu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | qemu | 1:10.0.7+ds-0+deb13u1 | DEBIAN-CVE-2025-12464 |
| Debian:14 | qemu | 1:10.1.3+ds-1 | DEBIAN-CVE-2025-12464 |
| Ubuntu:22.04:LTS | qemu | 1:6.2+dfsg-2ubuntu6.28 | USN-8073-1 |
| Ubuntu:24.04:LTS | qemu | 1:8.2.2+ds-0ubuntu1.13 | USN-8073-1 |
| Ubuntu:24.04:LTS | qemu | 1:8.2.2+ds-0ubuntu1.13 | UBUNTU-CVE-2025-12464 |
| Ubuntu:25.10 | qemu | 1:10.1.0+ds-5ubuntu2.4 | USN-8073-1 |
| Ubuntu:25.10 | qemu | 1:10.1.0+ds-5ubuntu2.4 | UBUNTU-CVE-2025-12464 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| qemu | 8.1.0 – before 10.1.3 | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2025-12464 vdb-entry, x_refsource_REDHAT
- RHBZ#2408845 issue-tracking, x_refsource_REDHAT
- https://gitlab.com/qemu-project/qemu/-/issues/3043