CVE-2025-68250

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2025-12-16. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

A fix is available — apply it.

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

hung_task: fix warnings caused by unaligned lock pointers

The blocker tracking mechanism assumes that lock pointers are at least 4-byte aligned to use their lower bits for type encoding.

However, as reported by Eero Tamminen, some architectures like m68k only guarantee 2-byte alignment of 32-bit values. This breaks the assumption and causes two related WARN_ON_ONCE checks to trigger.

To fix this, the runtime checks are adjusted to silently ignore any lock that is not 4-byte aligned, effectively disabling the feature in such cases and avoiding the related warnings.

Thanks to Geert Uytterhoeven for bisecting!

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

December 16, 2025

Last Modified

July 30, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

hung_task: fix warnings caused by unaligned lock pointers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c97513cddcfc235f2522617980838e500af21d01
generic

hung_task: fix warnings caused by unaligned lock pointers - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c0e2dcbe54cb15ecdf9d8f4501c6720423243888

Vendor Advisories for CVE-2025-68250(1)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1007.7) @ questing2026-05-21ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-14.14) @ questing2026-05-21ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1007.7) @ questing2026-05-21ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1008.8) @ questing2026-05-21ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1011.11) @ noble2026-05-21ubuntu
linuxKernel @ 6.17.6—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.

All Vendor Advisories

(5)

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 10× in last 7d / 43× 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 130 total refreshes for this CVE.

  1. 2026-08-01 04:15 UTCEPSS rescore
  2. 2026-07-30 16:27 UTCEPSS rescore
  3. 2026-07-30 06:48 UTCEG score recompute
  4. 2026-07-30 06:48 UTCGHSA enrichment
  5. 2026-07-30 06:21 UTCEG score recompute▲ 8.20
  6. 2026-07-30 06:21 UTCGHSA enrichment
  7. 2026-07-30 06:18 UTCMITRE cvelistV5CVSS v3 → 8.2 · severity → HIGH
  8. 2026-07-30 01:30 UTCEPSS rescore
  9. 2026-07-27 14:13 UTCEPSS rescore
  10. 2026-07-27 04:39 UTCOSV refresh
  11. 2026-07-24 14:17 UTCEPSS rescore
  12. 2026-07-23 14:18 UTCEPSS rescore
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  14. 2026-07-23 03:02 UTCEG score recompute
  15. 2026-07-22 14:08 UTCEPSS rescore
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  1. 2026-07-15 16:57 UTCEPSS rescore
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  5. 2026-07-13 06:12 UTCEPSS rescore
  6. 2026-07-12 05:46 UTCEPSS rescore
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  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-09 23:15 UTCOSV refresh
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-08 15:15 UTCEPSS rescore
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
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  17. 2026-07-04 06:31 UTCEPSS rescore
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  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
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  22. 2026-06-29 14:06 UTCEPSS rescore
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-28 14:07 UTCEPSS rescore
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  26. 2026-06-28 04:56 UTCEPSS rescore
  27. 2026-06-28 04:56 UTCEPSS rescore
  28. 2026-06-27 03:08 UTCEPSS rescore
  29. 2026-06-25 13:49 UTCEPSS rescore
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  31. 2026-06-24 14:05 UTCEPSS rescore
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  36. 2026-06-21 14:56 UTCEPSS rescore
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  38. 2026-06-21 09:31 UTCOSV refresh
  39. 2026-06-21 01:59 UTCEPSS rescore
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  41. 2026-06-19 19:25 UTCEPSS rescore
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  54. 2026-06-10 22:18 UTCEPSS rescore
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  56. 2026-06-08 14:17 UTCEPSS rescore
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  58. 2026-06-07 15:24 UTCEPSS rescore
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  60. 2026-06-06 13:47 UTCEPSS rescore
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  71. 2026-06-01 13:51 UTCEPSS rescore
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  73. 2026-05-31 22:30 UTCEPSS rescore
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  75. 2026-05-31 00:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-68250?
CVE-2025-68250 is a high vulnerability published on December 16, 2025. In the Linux kernel, the following vulnerability has been resolved: hung_task: fix warnings caused by unaligned lock pointers The blocker tracking mechanism assumes that lock pointers are at least 4-byte aligned to use their lower bits for type encoding. However, as reported by Eero Tamminen, some…
When was CVE-2025-68250 disclosed?
CVE-2025-68250 was first published in the National Vulnerability Database on December 16, 2025, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-68250 actively exploited?
CVE-2025-68250 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 81.1% of all scored CVEs.
What is the CVSS score of CVE-2025-68250?
CVE-2025-68250 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2025-68250?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-68250, 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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