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CVE-2015-8215

16
FAUCET Score

CVE-2015-8215 describes a denial-of-service vulnerability in the IPv6 stack of the Linux kernel prior to version 4.0. Specifically, the net/ipv6/addrconf.c file fails to validate MTU changes, allowing attackers to cause packet loss. This vulnerability affects Linux kernel versions before 4.0. With a CVSS score of 5.0, this vulnerability is considered medium severity. It can be exploited remotely with low attack complexity, requiring no authentication, and its impact is limited to denial of service (packet loss). There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.69%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0369 is in the 85th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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-0:3.10.0-327.el7
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2015-8215Moderate

kernel: MTU value is not validated in IPv6 stack causing packet loss

Feb 23, 2015

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Vendor Advisory
lists.opensuse.org / opensuse-security-announce/2015-12/msg00005.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00018.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00026.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00031.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00013.html
lists.opensuse.org / opensuse-security-announce/2016-08/msg00038.html
rhn.redhat.com / errata/RHSA-2016-0855.html
bugs.launchpad.net / bugs/1500810
bugzilla.novell.com / show_bug.cgi
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/77751427a1ff25b27d47a4c36b12c3c8667855ac
Vendor Advisory
debian.org / security/2015/dsa-3364
oracle.com / technetwork/topics/security/linuxbulletinapr2016-2952096.html
securityfocus.com / bid/85274