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CVE-2025-12464

Qemu-kvm: stack buffer overflow in e1000 device via short frames in loopback mode

Published: Oct 31, 2025Updated: Jun 30, 2026 Sources: CVE List NVD BDUCWE-121
6.2MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 93.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-121

Affected Products

Red Hat Inc.
commercial·USaka Red Hat
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat OpenShift Container Platform 4SaaSSaaS Service
Cloud & SaaS / container-orchestration
Red Hat OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Fabrice Bellard
individual-dev·FR
QEMULibrary
OSS Libraries / generic-library
and 6 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2025-12464
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2408845
bugzilla.redhat.com
https://gitlab.com/qemu-project/qemu/-/issues/3043
gitlab.com
and 2 more references View all →

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