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CVE-2015-2922

13
FAUCET Score

CVE-2015-2922 describes a vulnerability in the IPv6 Neighbor Discovery (ND) protocol within the Linux kernel (before version 3.19.6), affecting various distributions including Debian, Fedora, Oracle, and Red Hat. This flaw allows a remote attacker on the same network segment to manipulate the hop-limit setting of affected systems by sending a specially crafted Router Advertisement (RA) message with a small hop_limit value. The vulnerability has a CVSS score of 3.3, indicating a low severity, as it requires adjacent network access and only impacts availability by potentially causing denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.19.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
21CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

3.3LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
6.5
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.05%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 87th percentile among its peer group of 94 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, 0.0 Bluesky, 0.0 Mastodon, and 0.0 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 (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-504.30.3.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-229.11.1.rt56.141.11.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-229.11.1.ael7b
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-229.rt56.158.el6rt
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2015-2922Low

kernel: denial of service (DoS) attack against IPv6 network stacks due to improper handling of Router Advertisements.

Mar 24, 2015

References

git.kernel.org
lists.fedoraproject.org / pipermail/package-announce/2015-April/155804.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/155854.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/155908.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-07/msg00023.html
lists.opensuse.org / opensuse-security-announce/2015-08/msg00011.html
lists.opensuse.org / opensuse-security-announce/2015-09/msg00004.html
rhn.redhat.com / errata/RHSA-2015-1221.html
rhn.redhat.com / errata/RHSA-2015-1534.html
rhn.redhat.com / errata/RHSA-2015-1564.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/6fd99094de2b83d1d4c8457f2c83483b2828e75a
debian.org / security/2015/dsa-3237
Third Party Advisory
kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.19.6
ExploitVendor Advisory
openwall.com / lists/oss-security/2015/04/04/2
Exploit
oracle.com / technetwork/topics/security/bulletinoct2015-2511968.html
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
Third Party Advisory
securityfocus.com / bid/74315
securitytracker.com / id/1032417