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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

ParameterValue
Base score6.2
Attack VectorLOCAL
Attack complexityLOW
Privileges requiredNONE
User interactionNONE
ScopeUNCHANGED
ConfidentialityNONE
Integrity impactNONE
Availability impactHIGH
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTSqemuUnknown (9.0.2-r0)
25 LTSqemuFixed (10.0.9-r0)
StreamqemuFixed (10.2.0-r0)

References

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