CVE-2015-8215: n/a vulnerability

CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes to...

net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes to the MTU value, which allows context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager product.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 08:13 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2015-8215 is a Linux kernel IPv6 issue where invalid MTU changes were not properly checked. In affected systems, this could cause packet loss and network disruption, rather than data theft or code execution. Business urgency depends on whether legacy Linux kernels with IPv6 are still present in reachable network segments. Most exposure is in older Linux systems or vendor kernel builds referenced by Debian, Red Hat, SUSE, Oracle, and Ubuntu-related sources. Systems with IPv6 enabled and accepting network-driven configuration changes are more relevant than isolated hosts. Treat as a legacy infrastructure hygiene issue with possible availability impact. It should be scheduled promptly where old Linux kernels remain in production, especially on IPv6-enabled networks, but the provided sources do not support emergency active-exploitation handling. Mitigation focus: Apply the relevant vendor kernel security update for affected Linux distributions.; Prioritize legacy Linux hosts with IPv6 enabled on shared or untrusted networks.; Check vendor guidance before changing IPv6 Router Advertisement handling..

Prepared: Jun 13, 2026, 21:45 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: Nov 16, 2015, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

5Source 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://bugs.launchpad.net/bugs/1500810CVE reference · x_refsource_CONFIRM
https://bugzilla.novell.com/show_bug.cgi?id=944296CVE reference · x_refsource_CONFIRM
https://github.com/torvalds/linux/commit/77751427a1ff25b27d47a4c36b12c3c8667855acCVE reference · x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1192132CVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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