CVE-2026-72234

CRITICALPre-NVD 9.89.8
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-15. 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: access unicast_ttvn skb->data 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.

This was done correctly for the ethernet header but missed for the unicast_packet pointer.

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
50%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed90eb5c68420cdfe67ec1f773324198d2ef6f50
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b8afcf799b2cc92c41beebd029e53ed18960184a
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa9558af859934f24717d4bab97d61004f91a736
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9c2c05629e46c1fd43931506d41c56a885a98eb4
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a7b7248798123efbd5fafe58461d57c7cc718af
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/979175834a699ccc3c4c0b0ba60ecae0f135a587
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7b162b36de750565404cd3b98315706622c6974f
generic

batman-adv: access unicast_ttvn skb->data only after skb realloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7141990add3f75436f2933cb310654cad3b1e3e9

Vendor Advisories for CVE-2026-72234(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 52× in last 7d / 52× 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. 2026-08-21 08:41 UTCGHSA enrichment
  2. 2026-08-21 05:04 UTCGHSA enrichment
  3. 2026-08-21 01:26 UTCEG score recompute
  4. 2026-08-21 01:26 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 21:48 UTCGHSA enrichment
  7. 2026-08-20 18:11 UTCGHSA enrichment
  8. 2026-08-20 14:33 UTCGHSA enrichment
  9. 2026-08-20 10:56 UTCGHSA enrichment
  10. 2026-08-20 07:18 UTCGHSA enrichment
  11. 2026-08-20 03:41 UTCGHSA enrichment
  12. 2026-08-20 00:03 UTCGHSA enrichment
  13. 2026-08-19 20:24 UTCEG score recompute
  14. 2026-08-19 20:24 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 16:42 UTCGHSA enrichment
  17. 2026-08-19 13:04 UTCGHSA enrichment
  18. 2026-08-19 09:21 UTCGHSA enrichment
  19. 2026-08-19 05:41 UTCGHSA enrichment
  20. 2026-08-19 02:04 UTCGHSA enrichment
  21. 2026-08-18 22:26 UTCGHSA enrichment
  22. 2026-08-18 18:49 UTCGHSA enrichment
  23. 2026-08-18 15:11 UTCEG score recompute
  24. 2026-08-18 15:11 UTCGHSA enrichment
  25. 2026-08-18 13:49 UTCEPSS rescore
Show 27 more
  1. 2026-08-18 13:49 UTCEPSS rescore
  2. 2026-08-18 11:27 UTCGHSA enrichment
  3. 2026-08-18 07:49 UTCGHSA enrichment
  4. 2026-08-18 04:11 UTCGHSA enrichment
  5. 2026-08-18 00:30 UTCGHSA enrichment
  6. 2026-08-17 20:50 UTCGHSA enrichment
  7. 2026-08-17 17:13 UTCEG score recompute
  8. 2026-08-17 17:12 UTCGHSA enrichment
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-17 13:35 UTCGHSA enrichment
  11. 2026-08-17 09:57 UTCEG score recompute
  12. 2026-08-17 09:57 UTCGHSA enrichment
  13. 2026-08-17 06:20 UTCEG score recompute
  14. 2026-08-17 06:20 UTCGHSA enrichment
  15. 2026-08-17 05:59 UTCEG score recompute 9.80
  16. 2026-08-17 05:59 UTCGHSA enrichment
  17. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  18. 2026-08-17 05:31 UTCEG score recompute
  19. 2026-08-17 05:31 UTCGHSA enrichment
  20. 2026-08-17 05:25 UTCMITRE cvelistV5
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 06:39 UTCGHSA enrichment
  25. 2026-08-15 06:23 UTCNVD update
  26. 2026-08-15 06:09 UTCEG score recompute
  27. 2026-08-15 06:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72234?
CVE-2026-72234 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: access unicast_ttvn skb->data 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…
When was CVE-2026-72234 disclosed?
CVE-2026-72234 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72234 actively exploited?
CVE-2026-72234 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 50.2% of all scored CVEs.
What is the CVSS score of CVE-2026-72234?
CVE-2026-72234 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-72234?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72234, 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-2026-72234

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