CVE-2026-72226

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: tt: prevent TVLV OOB check overflow

A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16 used to store the tt_vlan_len. All additional safety checks to prevent out-of-bounds access of the TVLV buffer are invalid due to this overflow.

Using size_t prevents this overflow and ensures that the safety checks compare against the actual buffer requirements.

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
51%
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: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d6ff4764ff784ede25f5c83a6f5883a74c93a5ea
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7a581d9aaba8c82bd6177fa36b2588eea77f6e2b
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7319c0794f91be2734aac695794e7203606b49f8
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6222b443686525cb5a9b6a9cecf23b2e2ab23e2a
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/604bd5042fbcd1ab9f7cd98fd847ec017aeede8a
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3256c05d5a9db34346eaf20f52dddde984852d77
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1898273c5dc8148267ef9f97cd2517a2822350e7
generic

batman-adv: tt: prevent TVLV OOB check overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0de12a4c4847f571d82a9cd96bc633eded41d7c6

Vendor Advisories for CVE-2026-72226(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 44× in last 7d / 44× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 21:12 UTCGHSA enrichment
  3. 2026-08-20 16:53 UTCGHSA enrichment
  4. 2026-08-20 12:35 UTCGHSA enrichment
  5. 2026-08-20 08:16 UTCGHSA enrichment
  6. 2026-08-20 03:57 UTCGHSA enrichment
  7. 2026-08-19 23:37 UTCGHSA enrichment
  8. 2026-08-19 19:18 UTCEG score recompute
  9. 2026-08-19 19:18 UTCGHSA enrichment
  10. 2026-08-19 17:04 UTCEPSS rescore
  11. 2026-08-19 14:59 UTCGHSA enrichment
  12. 2026-08-19 10:40 UTCGHSA enrichment
  13. 2026-08-19 06:20 UTCGHSA enrichment
  14. 2026-08-19 01:56 UTCGHSA enrichment
  15. 2026-08-18 21:37 UTCGHSA enrichment
  16. 2026-08-18 17:02 UTCEG score recompute
  17. 2026-08-18 17:01 UTCGHSA enrichment
  18. 2026-08-18 13:49 UTCEPSS rescore
  19. 2026-08-18 13:49 UTCEPSS rescore
  20. 2026-08-18 12:41 UTCGHSA enrichment
  21. 2026-08-18 08:18 UTCGHSA enrichment
  22. 2026-08-18 03:53 UTCGHSA enrichment
  23. 2026-08-17 23:35 UTCGHSA enrichment
  24. 2026-08-17 19:16 UTCGHSA enrichment
  25. 2026-08-17 14:57 UTCEG score recompute
Show 19 more
  1. 2026-08-17 14:57 UTCGHSA enrichment
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 10:38 UTCEG score recompute
  4. 2026-08-17 10:38 UTCGHSA enrichment
  5. 2026-08-17 06:20 UTCEG score recompute
  6. 2026-08-17 06:20 UTCGHSA enrichment
  7. 2026-08-17 05:59 UTCEG score recompute▲ 9.80
  8. 2026-08-17 05:59 UTCGHSA enrichment
  9. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  10. 2026-08-17 05:31 UTCEG score recompute
  11. 2026-08-17 05:31 UTCGHSA enrichment
  12. 2026-08-17 05:24 UTCMITRE cvelistV5
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:15 UTCEPSS rescore
  16. 2026-08-15 06:40 UTCGHSA enrichment
  17. 2026-08-15 06:23 UTCNVD update
  18. 2026-08-15 06:09 UTCEG score recompute
  19. 2026-08-15 06:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72226?
CVE-2026-72226 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata (8 bytes). The size can therefore…
When was CVE-2026-72226 disclosed?
CVE-2026-72226 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-2026-72226 actively exploited?
CVE-2026-72226 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 49.4% of all scored CVEs.
What is the CVSS score of CVE-2026-72226?
CVE-2026-72226 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-72226?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72226, 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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