CVE-2026-45899

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

ext4: drop extent cache when splitting extent fails

When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent status tree. So drop all of the remaining potentially stale extents if the splitting fails.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (7)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dc7c9b9d03a59a7fe483574531327e650a4b4adc
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/808f3191498f300174523c54cab101e18795ae4e
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/79b592e8f1b435796cbc2722190368e3e8ffd7a1
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e54f8dfee359bbd58086c883ea8cffd5312999d
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/337506dc652383c80839edb8d8dcdd8ff2129b4f
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/31bf37cf53ede8145e2bc62da803d4506da92975
generic

ext4: drop extent cache when splitting extent fails - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/120c6bd7ca9d3e80a968b758cbb3fbd67570f132

Vendor Advisories for CVE-2026-45899(2)

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

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-25ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-25ubuntu
linuxKernel @ 5.10.253—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (335 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (100 versions)6.18.14-1—

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 61× 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 185 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45899?
CVE-2026-45899 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent…
When was CVE-2026-45899 disclosed?
CVE-2026-45899 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45899 actively exploited?
CVE-2026-45899 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 94.5% of all scored CVEs.
What is the CVSS score of CVE-2026-45899?
CVE-2026-45899 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45899?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45899, 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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