CVE-2015-5156

Severity: medium (CVSS 6.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-10-19 · updated 2026-06-17
Weakness: CWE-119

Description

The virtnet_probe function in drivers/net/virtio_net.c in the Linux kernel before 4.2 attempts to support a FRAGLIST feature without proper memory allocation, which allows guest OS users to cause a denial of service (buffer overflow and memory corruption) via a crafted sequence of fragmented packets.

Affected products

Linux kernel: through 4.1.10

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171454.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169378.html
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
http://rhn.redhat.com/errata/RHSA-2015-1978.html
http://rhn.redhat.com/errata/RHSA-2016-0855.html
http://www.debian.org/security/2015/dsa-3364
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/76230

Get alerted when CVE-2015-5156 or the next vulnerability affects your stack