CVE-2026-80600

CRITICALPre-NVD 9.89.8
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-28. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: 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:

batman-adv: dat: acquire ARP hw source only after skb realloc

The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation1% × 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

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddf
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8
generic

batman-adv: dat: acquire ARP hw source only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c

Vendor Advisories for CVE-2026-80600(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 18× in last 7d / 18× 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 06:08 UTCGHSA enrichment
  2. 2026-08-30 02:20 UTCEG score recompute
  3. 2026-08-30 02:20 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-29 22:34 UTCGHSA enrichment
  6. 2026-08-29 18:48 UTCGHSA enrichment
  7. 2026-08-29 15:01 UTCGHSA enrichment
  8. 2026-08-29 11:15 UTCEG score recompute
  9. 2026-08-29 11:15 UTCGHSA enrichment
  10. 2026-08-29 07:27 UTCEG score recompute
  11. 2026-08-29 07:27 UTCGHSA enrichment
  12. 2026-08-29 06:37 UTCEG score recompute 9.80
  13. 2026-08-29 06:37 UTCGHSA enrichment
  14. 2026-08-29 06:33 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  15. 2026-08-28 21:42 UTCEPSS rescore
  16. 2026-08-28 08:20 UTCNVD update
  17. 2026-08-28 07:37 UTCEG score recompute
  18. 2026-08-28 07:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80600?
CVE-2026-80600 is a critical vulnerability published on August 28, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: acquire ARP hw source only after skb realloc The pskbmaypull() called by batadvgetvid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an…
When was CVE-2026-80600 disclosed?
CVE-2026-80600 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-2026-80600 actively exploited?
CVE-2026-80600 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 59.0% of all scored CVEs.
What is the CVSS score of CVE-2026-80600?
CVE-2026-80600 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-80600?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80600, 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

Explore the affected products and dependency analysis for CVE-2026-80600

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