CVE-2025-68794

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-01-13. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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

A fix is available — apply it.

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

iomap: adjust read range correctly for non-block-aligned positions

iomap_adjust_read_range() assumes that the position and length passed in are block-aligned. This is not always the case however, as shown in the syzbot generated case for erofs. This causes too many bytes to be skipped for uptodate blocks, which results in returning the incorrect position and length to read in. If all the blocks are uptodate, this underflows length and returns a position beyond the folio.

Fix the calculation to also take into account the block offset when calculating how many bytes can be skipped for uptodate blocks.

CVSS v3
9.8
EG Score
9.8(medium)
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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

January 13, 2026

Last Modified

August 27, 2026

Advisory Details (7)

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

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce20f49ac9194cf81a77f01d1c316d7c17ae753c
generic

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b8c9f25fd84328c5fcc4f70c6d1e8f1d4787eaac
generic

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82b60ffbb532d919959702768dca04c3c0500ae5
generic

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7aa6bc3e8766990824f66ca76c19596ce10daf3e
generic

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/275b37a1e5c2c8abd313e8075f6aec9a349f291b
generic

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/142194fb21afe964d2d194cab1fc357cbf87e899
generic

iomap: adjust read range correctly for non-block-aligned positions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/12053695c8ef5410e8cc6c9ed4c0db9cd9c82b3e

Vendor Advisories for CVE-2025-68794(2)

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

Patch Availability(22)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-22.22) @ questing2026-08-27ubuntu
ubuntulinux-virtual-6.8 (6.8.0-110.110) @ noble2026-08-27ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.17.0-1010.11~24.04.1) @ noble2026-08-27ubuntu
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1012.12) @ questing2026-08-27ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1047.48) @ noble2026-08-27ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1054.57+fips1) @ noble2026-08-27ubuntu
ubuntulinux-tools-nvidia-64k-6.8 (6.8.0-1051.54) @ noble2026-08-27ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1011.11) @ questing2026-08-27ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1052.56) @ noble2026-08-27ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1049.50) @ noble2026-08-27ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2042.43) @ noble2026-08-27ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1051.54.1) @ noble2026-08-27ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1054.57~22.04.1) @ jammy2026-08-27ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1013.13) @ questing2026-08-27ubuntu
ubuntulinux-tools-raspi-6.17 (6.17.0-1014.14) @ questing2026-08-27ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1054.60) @ noble2026-08-27ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1054.60+fips1) @ noble2026-08-27ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1029.30) @ noble2026-08-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1022.22) @ noble2026-08-27ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1059.65~22.04.1) @ jammy2026-08-27ubuntu
linuxKernel @ 5.10.267—osv
linuxKernel @ 6.6.120—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 ... 7.2~rc5-1~exp1 (496 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)6.1.187-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.69-1~bpo12+1 (10 versions)6.12.69-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (93 versions)6.18.3-1—

Additional Vendor Advisories

(20)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 30× 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 211 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
  4. 2026-09-16 14:07 UTCEPSS rescore
  5. 2026-09-16 05:14 UTCEPSS rescore
  6. 2026-09-15 14:24 UTCOSV refresh
  7. 2026-09-15 03:10 UTCEPSS rescore
  8. 2026-09-13 16:46 UTCEPSS rescore
  9. 2026-09-12 15:00 UTCEPSS rescore
  10. 2026-09-11 14:52 UTCEPSS rescore
  11. 2026-09-11 09:36 UTCEPSS rescore
  12. 2026-09-10 09:34 UTCEPSS rescore
  13. 2026-09-08 22:00 UTCEPSS rescore
  14. 2026-09-07 16:00 UTCEPSS rescore
  15. 2026-09-06 13:47 UTCEPSS rescore
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-02 14:11 UTCEPSS rescore
  18. 2026-09-01 13:53 UTCEPSS rescore
  19. 2026-08-30 01:21 UTCEPSS rescore
  20. 2026-08-28 21:40 UTCEPSS rescore
  21. 2026-08-27 14:24 UTCEPSS rescore
  22. 2026-08-27 13:37 UTCEG score recompute
  23. 2026-08-27 13:37 UTCVendor advisory
  24. 2026-08-27 13:36 UTCGHSA enrichment
  25. 2026-08-27 13:03 UTCEG score recompute
Show 75 more
  1. 2026-08-27 13:03 UTCVendor advisory
  2. 2026-08-27 13:03 UTCGHSA enrichment
  3. 2026-08-26 14:45 UTCEPSS rescore
  4. 2026-08-25 13:48 UTCEPSS rescore
  5. 2026-08-24 14:16 UTCEPSS rescore
  6. 2026-08-23 00:18 UTCEPSS rescore
  7. 2026-08-21 23:48 UTCEPSS rescore
  8. 2026-08-20 22:55 UTCEPSS rescore
  9. 2026-08-19 17:03 UTCEPSS rescore
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-17 13:46 UTCEPSS rescore
  12. 2026-08-16 14:55 UTCEPSS rescore
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 23:30 UTCVendor advisory
  16. 2026-08-14 23:30 UTCGHSA enrichment
  17. 2026-08-14 14:44 UTCEG score recompute
  18. 2026-08-14 14:44 UTCVendor advisory
  19. 2026-08-14 14:44 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-12 13:50 UTCEPSS rescore
  22. 2026-08-11 13:42 UTCEPSS rescore
  23. 2026-08-10 23:59 UTCEPSS rescore
  24. 2026-08-10 00:01 UTCVendor advisory
  25. 2026-08-10 00:00 UTCGHSA enrichment
  26. 2026-08-09 20:20 UTCEG score recompute
  27. 2026-08-09 20:20 UTCVendor advisory
  28. 2026-08-09 20:20 UTCGHSA enrichment
  29. 2026-08-09 13:46 UTCEPSS rescore
  30. 2026-08-08 16:36 UTCEPSS rescore
  31. 2026-08-08 08:18 UTCVendor advisory
  32. 2026-08-08 08:18 UTCGHSA enrichment
  33. 2026-08-08 04:37 UTCVendor advisory
  34. 2026-08-08 04:37 UTCGHSA enrichment
  35. 2026-08-08 00:56 UTCEG score recompute
  36. 2026-08-08 00:56 UTCVendor advisory
  37. 2026-08-08 00:56 UTCGHSA enrichment
  38. 2026-08-07 16:27 UTCEPSS rescore
  39. 2026-08-06 13:46 UTCEPSS rescore
  40. 2026-08-06 09:39 UTCVendor advisory
  41. 2026-08-06 09:39 UTCGHSA enrichment
  42. 2026-08-06 05:57 UTCEG score recompute
  43. 2026-08-06 05:57 UTCVendor advisory
  44. 2026-08-06 05:57 UTCGHSA enrichment
  45. 2026-08-05 19:17 UTCEPSS rescore
  46. 2026-08-05 12:47 UTCEG score recompute
  47. 2026-08-05 12:47 UTCVendor advisory
  48. 2026-08-05 12:47 UTCGHSA enrichment
  49. 2026-08-04 10:37 UTCEPSS rescore
  50. 2026-08-03 10:35 UTCEPSS rescore
  51. 2026-08-02 23:55 UTCEG score recompute
  52. 2026-08-02 23:55 UTCVendor advisory
  53. 2026-08-02 23:55 UTCGHSA enrichment
  54. 2026-08-02 02:26 UTCEPSS rescore
  55. 2026-08-01 04:15 UTCEPSS rescore
  56. 2026-07-30 16:27 UTCEPSS rescore
  57. 2026-07-30 06:44 UTCEG score recompute
  58. 2026-07-30 06:44 UTCVendor advisory
  59. 2026-07-30 06:44 UTCGHSA enrichment
  60. 2026-07-30 06:20 UTCEG score recompute▲ 9.80
  61. 2026-07-30 06:20 UTCVendor advisory
  62. 2026-07-30 06:20 UTCGHSA enrichment
  63. 2026-07-30 06:18 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-27 14:13 UTCEPSS rescore
  66. 2026-07-27 02:09 UTCOSV refresh
  67. 2026-07-26 14:54 UTCEPSS rescore
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-25 14:17 UTCEPSS rescore
  70. 2026-07-25 14:17 UTCEPSS rescore
  71. 2026-07-24 14:17 UTCEPSS rescore
  72. 2026-07-23 14:18 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 03:02 UTCEG score recompute
  75. 2026-07-22 14:08 UTCEPSS rescore

Related CVEs

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Frequently asked(5)

What is CVE-2025-68794?
CVE-2025-68794 is a critical vulnerability published on January 13, 2026. In the Linux kernel, the following vulnerability has been resolved: iomap: adjust read range correctly for non-block-aligned positions iomapadjustread_range() assumes that the position and length passed in are block-aligned. This is not always the case however, as shown in the syzbot generated case…
When was CVE-2025-68794 disclosed?
CVE-2025-68794 was first published in the National Vulnerability Database on January 13, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-68794 actively exploited?
CVE-2025-68794 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 53.4% of all scored CVEs.
What is the CVSS score of CVE-2025-68794?
CVE-2025-68794 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-68794?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-68794, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-68794

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