CVE-2015-2922: n/a vulnerability

CVE-2015-2922: The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementat...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 05:32 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw lets a malicious Router Advertisement change a Linux system's IPv6 hop-limit setting to a very small value. That can disrupt how far IPv6 packets travel and may break connectivity. The sources identify Linux kernels before 3.19.6 and multiple vendor updates, but provide no CVSS score. Exposure is most relevant to Linux systems running kernels before 3.19.6, or vendor kernels lacking the backported fix, with IPv6 Router Advertisements accepted on reachable network segments. The source bundle does not define affected CPEs or all downstream versions. Prioritize as a legacy Linux and IPv6 network hygiene issue. It is not supported as actively exploited in the provided sources, but unpatched systems on untrusted IPv6 segments may face service disruption risk. Mitigation focus: Update affected Linux kernels using vendor security advisories.; Confirm vendor backport status for older distribution kernels.; Review whether hosts should accept IPv6 Router Advertisements on untrusted segments..

Prepared: Jun 13, 2026, 22:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 27, 2015, 10:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=1203712CVE reference · x_refsource_CONFIRM
https://github.com/torvalds/linux/commit/6fd99094de2b83d1d4c8457f2c83483b2828e75aCVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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