VulnerabilityPublished 10 Jul 2025Updated 5 Nov 2026

CVE-2025-38310: Linux kernel · seg6: Fix validation of nexthop addresses

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in d2507aeea45b3c5aa24d5daae0cf3db76895c0b7 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in d2507aeea45b3c5aa24d5daae0cf3db76895c0b7, d5d9fd13bc19a3f9f2a951c5b6e934d84205789e, cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac +3

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d1df6fd8a1d22d37cffa0075ab8ad423ce656777, < d2507aeea45b3c5aa24d5daae0cf3db76895c0b7	Fixed in d2507aeea45b3c5aa24d5daae0cf3db76895c0b7
LinuxLinux	Affected ≥ d1df6fd8a1d22d37cffa0075ab8ad423ce656777, < d5d9fd13bc19a3f9f2a951c5b6e934d84205789e	Fixed in d5d9fd13bc19a3f9f2a951c5b6e934d84205789e
LinuxLinux	Affected ≥ d1df6fd8a1d22d37cffa0075ab8ad423ce656777, < cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac	Fixed in cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac
LinuxLinux	Affected ≥ d1df6fd8a1d22d37cffa0075ab8ad423ce656777, < cd4cd09810211fa23609c5c1018352e9e1cd8e5a	Fixed in cd4cd09810211fa23609c5c1018352e9e1cd8e5a
LinuxLinux	Affected ≥ d1df6fd8a1d22d37cffa0075ab8ad423ce656777, < 668923c474608dd9ebce0fbcc41bd8a27aa73dd6	Fixed in 668923c474608dd9ebce0fbcc41bd8a27aa73dd6
LinuxLinux	Affected ≥ d1df6fd8a1d22d37cffa0075ab8ad423ce656777, < 7632fedb266d93ed0ed9f487133e6c6314a9b2d1	Fixed in 7632fedb266d93ed0ed9f487133e6c6314a9b2d1

Description

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.

References

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