CVE-2026-23347can: usb: f81604: correctly anchor the urb in the read bulk callback
- 5.5MediumCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: can: usb: f81604: correctly anchor the urb in the read bulk callback When submitting an urb, that is using the anchor pattern, it needs to be anchored before submitting it otherwise it could be leaked if usb_kill_anchored_urbs() is called. This logic is correctly done elsewhere in the driver, except in the read bulk callback so do that here also.
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 47 days later
· 47 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 88da17436973e463bed59bea79771fb03a21555e – < 54ee74307165b348b2fddcd7942eb48fb4ee1237
- affected 88da17436973e463bed59bea79771fb03a21555e – < c001214e12202338425d6dda5d2a1919d674282d
- affected 88da17436973e463bed59bea79771fb03a21555e – < f6d80b104f904a6da922907394eec66d3e2ffc57
- affected 88da17436973e463bed59bea79771fb03a21555e – < 7724645c4792914cd07f36718816c5369cc57970
- affected 88da17436973e463bed59bea79771fb03a21555e – < 952caa5da10bed22be09612433964f6877ba0dde
- affected 6.5
- unaffected < 6.5
- unaffected 6.6.130 – ≤ 6.6.*
- unaffected 6.12.77 – ≤ 6.12.*
- unaffected 6.18.17 – ≤ 6.18.*
- unaffected 6.19.7 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References5
- https://git.kernel.org/stable/c/54ee74307165b348b2fddcd7942eb48fb4ee1237 (opens in a new tab)
- https://git.kernel.org/stable/c/c001214e12202338425d6dda5d2a1919d674282d (opens in a new tab)
- https://git.kernel.org/stable/c/f6d80b104f904a6da922907394eec66d3e2ffc57 (opens in a new tab)
- https://git.kernel.org/stable/c/7724645c4792914cd07f36718816c5369cc57970 (opens in a new tab)
- https://git.kernel.org/stable/c/952caa5da10bed22be09612433964f6877ba0dde (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-15315 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-23347)Record last updated .