CVE-2026-64222

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-07-24. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

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

octeontx2-pf: avoid double free of pool->stack on AQ init failure

otx2_pool_aq_init() frees pool->stack when mailbox sync or retry allocation fails, but leaves the pointer unchanged. Later, otx2_sq_aura_pool_init() unwinds the partial setup through otx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific cn20k_pool_aq_init() implementation has the same bug in its corresponding error path.

Set pool->stack to NULL immediately after the local free so the shared cleanup path does not free the same stack again while cleaning up partially initialized pool state.

The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3.

Runtime validation was not performed because reproducing this path requires OcteonTX2/CN20K hardware.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 24, 2026

Last Modified

August 11, 2026

Advisory Details (8)

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

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea
generic

octeontx2-pf: avoid double free of pool->stack on AQ init failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74

Vendor Advisories for CVE-2026-64222(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)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-26ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-26ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-26ubuntu

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 (54 versions)5.10.259-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
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 39× in last 7d / 167× 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 182 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64222?
CVE-2026-64222 is a high vulnerability published on July 24, 2026. In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: avoid double free of pool->stack on AQ init failure otx2poolaq_init() frees pool->stack when mailbox sync or retry allocation fails, but leaves the pointer unchanged. Later, otx2sqaurapoolinit() unwinds the partial…
When was CVE-2026-64222 disclosed?
CVE-2026-64222 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64222 actively exploited?
CVE-2026-64222 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 97.8% of all scored CVEs.
What is the CVSS score of CVE-2026-64222?
CVE-2026-64222 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-64222?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64222, 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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