CVE-2026-80646

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

ipv6: guard against possible NULL deref in __in6_dev_stats_get()

dev_get_by_index_rcu() could return NULL if the original physical device is unregistered.

Found by Sashiko.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 29, 2026

Advisory Details (8)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc920c0659cdea5afd8721c1155a51564859e075
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/952426a83ca75cea25c09d58944abafaa3ebd242
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7
generic

ipv6: guard against possible NULL deref in __in6_dev_stats_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb

Vendor Advisories for CVE-2026-80646(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 20:37 UTCEG score recompute
  3. 2026-08-29 20:37 UTCGHSA enrichment
  4. 2026-08-29 07:27 UTCEG score recompute
  5. 2026-08-29 07:26 UTCGHSA enrichment
  6. 2026-08-29 06:36 UTCEG score recompute▲ 7.50
  7. 2026-08-29 06:36 UTCGHSA enrichment
  8. 2026-08-29 06:33 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  9. 2026-08-28 21:42 UTCEPSS rescore
  10. 2026-08-28 08:20 UTCNVD update
  11. 2026-08-28 07:34 UTCEG score recompute
  12. 2026-08-28 07:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80646?
CVE-2026-80646 is a high vulnerability published on August 28, 2026. In the Linux kernel, the following vulnerability has been resolved: ipv6: guard against possible NULL deref in in6devstats_get() devgetbyindexrcu() could return NULL if the original physical device is unregistered. Found by Sashiko.
When was CVE-2026-80646 disclosed?
CVE-2026-80646 was first published in the National Vulnerability Database on August 28, 2026, with the most recent update on August 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80646 actively exploited?
CVE-2026-80646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.8% of all scored CVEs.
What is the CVSS score of CVE-2026-80646?
CVE-2026-80646 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-80646?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80646, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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