CVE-2025-12464

MEDIUM

6.2

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.

CVE Details

CVSS v3.1 Score6.2

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published10/31/2025

Last Modified5/6/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-121

References

https://access.redhat.com/security/cve/CVE-2025-12464(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2408845(secalert@redhat.com)

https://gitlab.com/qemu-project/qemu/-/issues/3043(secalert@redhat.com)

IOC Correlations

No correlations recorded

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