CVE-2026-89840

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed

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

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

f2fs: validate MOVE_RANGE destination size

F2FS_IOC_MOVE_RANGE checks the source range, but not the destination end before updating i_size. A source hole can expose this: __clone_blkaddrs() skips NULL_ADDR entries and returns success, so the caller can still extend the destination inode with unchecked pos_out + len.

Reject destination overflow and use inode_newsize_ok() before extending the destination inode.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 16, 2026

Last Modified

October 3, 2026

Advisory Details (2)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

f2fs: validate MOVE_RANGE destination size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e533889fc26aea0cd83c90327063f272061dd820
generic

f2fs: validate MOVE_RANGE destination size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dcae1eeda53149f219dd6af93b3083b7271c1c63

Vendor Advisories for CVE-2026-89840(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (183 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 43× in last 7d / 125× 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.

Showing the most recent 100 of 125 total refreshes for this CVE.

  1. 2026-10-05 07:27 UTCEG score recompute
  2. 2026-10-05 07:27 UTCVendor advisory
  3. 2026-10-05 07:27 UTCGHSA enrichment
  4. 2026-10-04 23:22 UTCEPSS rescore
  5. 2026-10-04 20:29 UTCVendor advisory
  6. 2026-10-04 20:29 UTCGHSA enrichment
  7. 2026-10-04 09:31 UTCVendor advisory
  8. 2026-10-04 09:31 UTCGHSA enrichment
  9. 2026-10-03 22:32 UTCEG score recompute
  10. 2026-10-03 22:32 UTCVendor advisory
  11. 2026-10-03 22:32 UTCGHSA enrichment
  12. 2026-10-03 11:34 UTCVendor advisory
  13. 2026-10-03 11:34 UTCGHSA enrichment
  14. 2026-10-03 01:09 UTCEG score recompute
  15. 2026-10-03 01:09 UTCVendor advisory
  16. 2026-10-03 01:09 UTCGHSA enrichment
  17. 2026-10-02 14:11 UTCVendor advisory
  18. 2026-10-02 14:11 UTCGHSA enrichment
  19. 2026-10-02 03:12 UTCEG score recompute
  20. 2026-10-02 03:12 UTCVendor advisory
  21. 2026-10-02 03:12 UTCGHSA enrichment
  22. 2026-10-01 19:51 UTCEPSS rescore
  23. 2026-10-01 16:12 UTCVendor advisory
  24. 2026-10-01 16:12 UTCGHSA enrichment
  25. 2026-10-01 05:14 UTCVendor advisory
Show 75 more
  1. 2026-10-01 05:14 UTCGHSA enrichment
  2. 2026-09-30 18:16 UTCEG score recompute
  3. 2026-09-30 18:16 UTCGHSA enrichment
  4. 2026-09-30 15:04 UTCEPSS rescore
  5. 2026-09-30 07:12 UTCVendor advisory
  6. 2026-09-30 07:12 UTCGHSA enrichment
  7. 2026-09-29 20:14 UTCEG score recompute
  8. 2026-09-29 20:14 UTCVendor advisory
  9. 2026-09-29 20:14 UTCGHSA enrichment
  10. 2026-09-29 09:14 UTCVendor advisory
  11. 2026-09-29 09:14 UTCGHSA enrichment
  12. 2026-09-28 22:16 UTCEG score recompute
  13. 2026-09-28 22:16 UTCVendor advisory
  14. 2026-09-28 22:16 UTCGHSA enrichment
  15. 2026-09-28 13:52 UTCEPSS rescore
  16. 2026-09-28 13:52 UTCEPSS rescore
  17. 2026-09-28 11:18 UTCVendor advisory
  18. 2026-09-28 11:18 UTCGHSA enrichment
  19. 2026-09-28 00:20 UTCEG score recompute
  20. 2026-09-28 00:20 UTCVendor advisory
  21. 2026-09-28 00:20 UTCGHSA enrichment
  22. 2026-09-27 13:49 UTCEPSS rescore
  23. 2026-09-27 13:21 UTCVendor advisory
  24. 2026-09-27 13:21 UTCGHSA enrichment
  25. 2026-09-27 02:24 UTCEG score recompute
  26. 2026-09-27 02:24 UTCVendor advisory
  27. 2026-09-27 02:24 UTCGHSA enrichment
  28. 2026-09-26 15:59 UTCEPSS rescore
  29. 2026-09-26 15:25 UTCVendor advisory
  30. 2026-09-26 15:25 UTCGHSA enrichment
  31. 2026-09-26 04:27 UTCEG score recompute
  32. 2026-09-26 04:27 UTCVendor advisory
  33. 2026-09-26 04:27 UTCGHSA enrichment
  34. 2026-09-25 17:26 UTCVendor advisory
  35. 2026-09-25 17:25 UTCGHSA enrichment
  36. 2026-09-25 06:25 UTCVendor advisory
  37. 2026-09-25 06:25 UTCGHSA enrichment
  38. 2026-09-24 19:27 UTCEG score recompute
  39. 2026-09-24 19:27 UTCVendor advisory
  40. 2026-09-24 19:27 UTCGHSA enrichment
  41. 2026-09-24 14:04 UTCEPSS rescore
  42. 2026-09-24 08:29 UTCVendor advisory
  43. 2026-09-24 08:29 UTCGHSA enrichment
  44. 2026-09-23 21:32 UTCEG score recompute
  45. 2026-09-23 21:32 UTCVendor advisory
  46. 2026-09-23 21:32 UTCGHSA enrichment
  47. 2026-09-23 17:54 UTCEPSS rescore
  48. 2026-09-23 10:34 UTCVendor advisory
  49. 2026-09-23 10:34 UTCGHSA enrichment
  50. 2026-09-22 23:33 UTCEG score recompute
  51. 2026-09-22 23:33 UTCVendor advisory
  52. 2026-09-22 23:33 UTCGHSA enrichment
  53. 2026-09-22 16:01 UTCEPSS rescore
  54. 2026-09-22 12:16 UTCVendor advisory
  55. 2026-09-22 12:16 UTCGHSA enrichment
  56. 2026-09-22 01:19 UTCEG score recompute
  57. 2026-09-22 01:19 UTCVendor advisory
  58. 2026-09-22 01:18 UTCGHSA enrichment
  59. 2026-09-21 21:09 UTCEPSS rescore
  60. 2026-09-21 14:20 UTCEG score recompute
  61. 2026-09-21 14:20 UTCVendor advisory
  62. 2026-09-21 14:20 UTCGHSA enrichment
  63. 2026-09-21 13:20 UTCEG score recompute
  64. 2026-09-21 13:20 UTCVendor advisory
  65. 2026-09-21 13:20 UTCGHSA enrichment
  66. 2026-09-21 05:34 UTCEG score recompute
  67. 2026-09-21 05:34 UTCVendor advisory
  68. 2026-09-21 05:34 UTCGHSA enrichment
  69. 2026-09-20 20:16 UTCEPSS rescore
  70. 2026-09-20 18:35 UTCVendor advisory
  71. 2026-09-20 18:35 UTCGHSA enrichment
  72. 2026-09-20 07:37 UTCVendor advisory
  73. 2026-09-20 07:37 UTCGHSA enrichment
  74. 2026-09-19 20:27 UTCEG score recompute
  75. 2026-09-19 20:27 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-89840?
CVE-2026-89840 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: f2fs: validate MOVE_RANGE destination size F2FSIOCMOVE_RANGE checks the source range, but not the destination end before updating isize. A source hole can expose this: cloneblkaddrs() skips NULL_ADDR entries and returns success, so…
When was CVE-2026-89840 disclosed?
CVE-2026-89840 was first published on September 16, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89840 actively exploited?
CVE-2026-89840 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89840?
CVE-2026-89840 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89840?
No fix for CVE-2026-89840 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-89840 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-89840

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