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CVE-2015-5156

18
FAUCET Score

CVE-2015-5156 describes a buffer overflow and memory corruption vulnerability in the virtnet_probe function of the Linux kernel's virtio_net.c driver, affecting Linux kernel versions prior to 4.2. This flaw allows a guest operating system user to trigger a denial of service by sending a specially crafted sequence of fragmented packets. With a CVSS score of 6.1, it is considered a medium severity vulnerability, requiring adjacent network access (AV:A) with low attack complexity (AC:L) to achieve a complete availability impact (A:C). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion beyond a single Reddit mention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.1MEDIUM

AV:A/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
6.5
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.16%
Probability of exploitation in next 30 days
EPSS Percentile
64.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0116 is in the 91st percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-642.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-229.20.1.rt56.141.14.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-229.20.1.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2015-5156Moderate

kernel: buffer overflow with fraglist larger than MAX_SKB_FRAGS + 2 in virtio-net

Aug 6, 2015

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
lists.fedoraproject.org / pipermail/package-announce/2015-November/171454.html
lists.fedoraproject.org / pipermail/package-announce/2015-October/169378.html
lists.opensuse.org / opensuse-security-announce/2015-10/msg00009.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00018.html
rhn.redhat.com / errata/RHSA-2015-1978.html
rhn.redhat.com / errata/RHSA-2016-0855.html
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39
debian.org / security/2015/dsa-3364
oracle.com / technetwork/topics/security/linuxbulletinapr2016-2952096.html
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/76230
securitytracker.com / id/1034045
ubuntu.com / usn/USN-2773-1
ubuntu.com / usn/USN-2774-1
ubuntu.com / usn/USN-2777-1