CVE-2015-2922

CVE-2015-2922 is a low-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-17.

Key facts

• Severity: Low (CVSS 2.0 base score 3.3)
• EPSS exploit prediction: 3% (86th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-17
• Affected product: Linux Linux Kernel
• Published: 2015-05-27
• Last modified: 2026-06-17

Description

The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.

Frequently asked questions

What is CVE-2015-2922?

The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.

How severe is CVE-2015-2922?

CVE-2015-2922 has a CVSS 2.0 base score of 3.3, rated low severity.

Is CVE-2015-2922 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2922?

CVE-2015-2922 primarily affects Linux Linux Kernel. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-2922?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-2922 published?

CVE-2015-2922 was published on 2015-05-27 and last updated on 2026-06-17.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6fd99094de2b83d1d4c8457f2c83483b2828e75a
• http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155804.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155854.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155908.html
• http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
• http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
• http://rhn.redhat.com/errata/RHSA-2015-1221.html
• http://rhn.redhat.com/errata/RHSA-2015-1534.html
• http://rhn.redhat.com/errata/RHSA-2015-1564.html
• http://www.debian.org/security/2015/dsa-3237
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.6
• http://www.openwall.com/lists/oss-security/2015/04/04/2
• http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
• http://www.securityfocus.com/bid/74315
• http://www.securitytracker.com/id/1032417
• https://bugzilla.redhat.com/show_bug.cgi?id=1203712
• https://github.com/torvalds/linux/commit/6fd99094de2b83d1d4c8457f2c83483b2828e75a

Affected products (9)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_mrg:2.5:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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