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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: May 6, 2026 Sources: CVE List NVD BDUCWE-121
NVD MITRE
6.2CVSSMEDIUM
EPSS Score
0.1%
Top 95.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

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

QEMUFabrice Bellard
Library
OSS Libraries / generic-library
Red Hat OpenShift Container PlatformRed Hat Inc.
SaaSSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
fabrice bellardindividual-devFRCloud & SaaS
red hat inc.commercialUSOperating Systemsaka red hat
red hatcommercialUSOperating Systemsaka red hat
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://www.cve.org/CVERecord?id=CVE-2025-12464
cve.org
https://vuldb.com/?id.330820
vuldb.com
https://access.redhat.com/security/cve/CVE-2025-12464
access.redhat.com
and 2 more references View all →

Timeline

Published
Oct 31, 2025
Last Updated
May 6, 2026

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