CVE-2026-72225

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: 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:

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()

jbd2_journal_initialize_fast_commit() validates journal capacity by checking (journal->j_last - num_fc_blks < JBD2_MIN_JOURNAL_BLOCKS). Both j_last and num_fc_blks are unsigned, so when num_fc_blks exceeds j_last the subtraction wraps to a large value, bypassing the bounds check.

The resulting underflow corrupts j_last, j_fc_first, and j_free, leading to journal abort.

Fix by checking num_fc_blks against j_last before the subtraction, returning -EFSCORRUPTED.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (7)

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

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fb9b49618ed7296ebfad62a3835da8945f727001
generic

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e144ad0250f77e23e28949587b8b57e40dc3b512
generic

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a58fc10adf503969fec2007b5afe8987258046c4
generic

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/78955fdce8ff654e6d33a2fa90882a1e7eb26330
generic

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4b48dcb88bb9117e3d3f051175a9a8b7cff7f8b6
generic

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4450dcaadf7d4aae8b6e4223b5d6ee4eb77097a9
generic

jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/289a2ca0c9b7eae74f93fc213b0b971669b8683d

Vendor Advisories for CVE-2026-72225(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 31× in last 7d / 31× 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 21:04 UTCGHSA enrichment
  3. 2026-08-20 10:15 UTCGHSA enrichment
  4. 2026-08-19 23:27 UTCEG score recompute
  5. 2026-08-19 23:27 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 12:38 UTCGHSA enrichment
  8. 2026-08-19 01:49 UTCGHSA enrichment
  9. 2026-08-18 14:58 UTCEG score recompute
  10. 2026-08-18 14:58 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 04:01 UTCEG score recompute
  14. 2026-08-18 04:01 UTCGHSA enrichment
  15. 2026-08-17 17:09 UTCEG score recompute
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 06:20 UTCEG score recompute
  18. 2026-08-17 06:20 UTCGHSA enrichment
  19. 2026-08-17 05:59 UTCEG score recompute▲ 7.80
  20. 2026-08-17 05:59 UTCGHSA enrichment
  21. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  22. 2026-08-17 05:31 UTCEG score recompute
  23. 2026-08-17 05:31 UTCGHSA enrichment
  24. 2026-08-17 05:24 UTCMITRE cvelistV5
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 6 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 02:15 UTCEPSS rescore
  3. 2026-08-15 06:40 UTCGHSA enrichment
  4. 2026-08-15 06:23 UTCNVD update
  5. 2026-08-15 06:09 UTCEG score recompute
  6. 2026-08-15 06:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72225?
CVE-2026-72225 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: jbd2: fix integer underflow in jbd2journalinitializefastcommit() jbd2journalinitializefastcommit() validates journal capacity by checking (journal->jlast - numfcblks < JBD2MINJOURNALBLOCKS). Both jlast and numfcblks are unsigned,…
When was CVE-2026-72225 disclosed?
CVE-2026-72225 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-2026-72225 actively exploited?
CVE-2026-72225 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.0% of all scored CVEs.
What is the CVSS score of CVE-2026-72225?
CVE-2026-72225 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-72225?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72225, 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-2026-72225

Explore →

Is Your Infrastructure Affected by CVE-2026-72225?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs