CVE-2015-7504

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-16 · updated 2026-06-17
Weakness: CWE-787

Description

Heap-based buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU allows guest OS administrators to cause a denial of service (instance crash) or possibly execute arbitrary code via a series of packets in loopback mode.

Affected products

Debian Linux: 7.0, 8.0
QEMU: through 2.4.1; 2.5.0-rc0, 2.5.0-rc1, 2.5.0-rc2
xen: all versions

References

http://rhn.redhat.com/errata/RHSA-2015-2694.html
http://rhn.redhat.com/errata/RHSA-2015-2695.html
http://rhn.redhat.com/errata/RHSA-2015-2696.html
http://www.debian.org/security/2016/dsa-3469
http://www.debian.org/security/2016/dsa-3470
http://www.debian.org/security/2016/dsa-3471
http://www.openwall.com/lists/oss-security/2015/11/30/2
http://www.securityfocus.com/bid/78227
http://www.securitytracker.com/id/1034268
http://xenbits.xen.org/xsa/advisory-162.html
https://lists.gnu.org/archive/html/qemu-devel/2015-11/msg06342.html
https://security.gentoo.org/glsa/201602-01

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