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Vulnerability record · CVE-2015-7512 · published 8 January 2016

CVE-2015-7512: Qemu classic buffer overflow vulnerability

Qemu · Qemu

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.

9.0 CVSS 3.1 Critical EPSS 7.7% · top 5.6% CWE-120 · Classic buffer overflow
9.0CVSS 3.1 base score, v2 6.8
7.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
24References
17 Jun 2026Last modified by NVD

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.

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

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=8b98a2f07175d46c3f7217639bd5e03f
http://rhn.redhat.com/errata/RHSA-2015-2694.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2695.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2696.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3469 Third Party Advisory
http://www.debian.org/security/2016/dsa-3470 Third Party Advisory
http://www.debian.org/security/2016/dsa-3471 Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/30/3 Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html Third Party Advisory
http://www.securityfocus.com/bid/78230 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1034527 Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201602-01 Third Party Advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=8b98a2f07175d46c3f7217639bd5e03f
http://rhn.redhat.com/errata/RHSA-2015-2694.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2695.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2696.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3469 Third Party Advisory
http://www.debian.org/security/2016/dsa-3470 Third Party Advisory
http://www.debian.org/security/2016/dsa-3471 Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/30/3 Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html Third Party Advisory
http://www.securityfocus.com/bid/78230 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1034527 Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201602-01 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2015-7512), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.