CVE-2026-64348

UNRATEDCVSS · not yet scoredTrending — 3 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

usb: free iso schedules on failed submit

EHCI and FOTG210 isochronous submits build an ehci_iso_sched before linking the URB to the endpoint queue, and keep the staged schedule in urb->hcpriv until iso_stream_schedule() and the link helpers consume it. If the controller is no longer accessible, or usb_hcd_link_urb_to_ep() fails, submit jumps to done_not_linked before that handoff happens and leaks the staged schedule still attached to urb->hcpriv.

Free the staged schedule from done_not_linked when submit fails before the URB is linked and clear urb->hcpriv after the free.

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 v7.1.1.

An x86_64 allyesconfig build showed no new warnings. As we do not have an EHCI host controller with a USB isochronous device to test with, no runtime testing was able to be performed.

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

References (6)

Vendor Advisories for CVE-2026-64348(2)

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

Affected Packages

(5 across 4 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (338 versions)——
linux-6.12—6.12.100-1~deb12u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (55 versions)5.10.262-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (156 versions)7.1.4-1—

Data Freshness Timeline

(refreshed 10× in last 7d / 44× 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.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-30 00:43 UTCVendor advisory
  3. 2026-08-30 00:42 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-26 19:52 UTCVendor advisory
  6. 2026-08-26 19:51 UTCGHSA enrichment
  7. 2026-08-26 14:47 UTCEPSS rescore
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-23 15:00 UTCVendor advisory
  10. 2026-08-23 15:00 UTCGHSA enrichment
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-20 22:55 UTCEPSS rescore
  13. 2026-08-20 10:10 UTCVendor advisory
  14. 2026-08-20 10:10 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 05:25 UTCNVD update
  18. 2026-08-17 05:19 UTCVendor advisory
  19. 2026-08-17 05:19 UTCGHSA enrichment
  20. 2026-08-17 05:05 UTCMITRE cvelistV5
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-15 01:30 UTCEPSS rescore
  23. 2026-08-14 19:59 UTCVendor advisory
  24. 2026-08-14 19:59 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 34 more
  1. 2026-08-11 15:08 UTCVendor advisory
  2. 2026-08-11 15:08 UTCGHSA enrichment
  3. 2026-08-11 03:06 UTCVendor advisory
  4. 2026-08-11 03:06 UTCGHSA enrichment
  5. 2026-08-11 00:00 UTCEPSS rescore
  6. 2026-08-09 13:47 UTCEPSS rescore
  7. 2026-08-08 16:37 UTCEPSS rescore
  8. 2026-08-07 22:15 UTCGHSA enrichment
  9. 2026-08-06 13:47 UTCEPSS rescore
  10. 2026-08-05 19:17 UTCEPSS rescore
  11. 2026-08-05 19:17 UTCEPSS rescore
  12. 2026-08-04 17:25 UTCGHSA enrichment
  13. 2026-08-04 15:10 UTCEPSS rescore
  14. 2026-08-04 10:39 UTCEPSS rescore
  15. 2026-08-03 10:36 UTCEPSS rescore
  16. 2026-08-02 02:27 UTCEPSS rescore
  17. 2026-08-01 12:34 UTCEG score recompute
  18. 2026-08-01 12:34 UTCGHSA enrichment
  19. 2026-08-01 04:16 UTCEPSS rescore
  20. 2026-07-30 01:30 UTCEPSS rescore
  21. 2026-07-30 01:30 UTCEPSS rescore
  22. 2026-07-29 07:44 UTCEG score recompute
  23. 2026-07-29 07:44 UTCGHSA enrichment
  24. 2026-07-28 15:37 UTCEPSS rescore
  25. 2026-07-27 14:14 UTCEPSS rescore
  26. 2026-07-26 14:54 UTCEPSS rescore
  27. 2026-07-26 14:54 UTCEPSS rescore
  28. 2026-07-26 02:50 UTCEG score recompute
  29. 2026-07-26 02:49 UTCGHSA enrichment
  30. 2026-07-25 14:18 UTCEPSS rescore
  31. 2026-07-25 14:18 UTCEPSS rescore
  32. 2026-07-25 10:39 UTCNVD update
  33. 2026-07-25 09:37 UTCEG score recompute
  34. 2026-07-25 09:21 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-64348?
CVE-2026-64348 is a publicly disclosed vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: usb: free iso schedules on failed submit EHCI and FOTG210 isochronous submits build an ehciisosched before linking the URB to the endpoint queue, and keep the staged schedule in urb->hcpriv until isostreamschedule() and the link…
When was CVE-2026-64348 disclosed?
CVE-2026-64348 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64348 actively exploited?
CVE-2026-64348 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 93.2% of all scored CVEs.
How do I remediate CVE-2026-64348?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64348, 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.

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