CVE-2015-7512

critical

Published 2016-01-08 · Modified 2026-05-06

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

9.0

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.0

Description

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

Predictions

Exploit likelihood

93%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Red Hat Affected 2 releases

Version	Status	Fixed in
6.7	Affected	—
6.0	Affected	—

Debian Mixed 7 releases

Version	Status	Fixed in
trixie	Fixed	`1:2.5+dfsg-1`
sid	Fixed	`1:2.5+dfsg-1`
forky	Fixed	`1:2.5+dfsg-1`
bullseye	Fixed	`1:2.5+dfsg-1`
bookworm	Fixed	`1:2.5+dfsg-1`
8.0	Affected	—
7.0	Affected	—

Application impact

Vendor	Product	Versions
qemu	qemu	`{"endIncluding":"2.4.1"}`
qemu	qemu	`2.5.0`
redhat	openstack	`5.0`
redhat	virtualization	`3.0`

References

CWEs

CWE-120

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.