CVE-2026-64226

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-24. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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

A fix is available — apply it.

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

sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path

In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed synchronously and the deref becomes a UAF.

Move put_task_struct() past scx_error().

CVSS v3
7.8
EG Score
7.8(medium)
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
3%
KEV
Not listed

Published

July 24, 2026

Last Modified

August 13, 2026

Advisory Details (4)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cf396941901858b0de426cdcd3974eea6a02c98c
generic

sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a415cc53711f2238e0f0ca8a6bcc796c003b127
generic

sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/57e19ba3f58a67eb924022a5a60b67fd08e5cbbd
generic

sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/45c7c4e3db8b700307313c035ea08be829a7f21b

Vendor Advisories for CVE-2026-64226(1)

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

Patch Availability(3)

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (138 versions)7.0.12-1

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(3)

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 31× in last 7d / 171× 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 201 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64226?
CVE-2026-64226 is a high vulnerability published on July 24, 2026. In the Linux kernel, the following vulnerability has been resolved: schedext: Avoid UAF in scxrootenableworkfn() init failure path In scxrootenableworkfn(), puttaskstruct(p) is called before scxerror() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed…
When was CVE-2026-64226 disclosed?
CVE-2026-64226 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64226 actively exploited?
CVE-2026-64226 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-64226?
CVE-2026-64226 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-64226?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64226, 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-2026-64226

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