Medium 5.5Published Mar 25, 2026

CVE-2026-23347can: usb: f81604: correctly anchor the urb in the read bulk callback

Updated under an hour ago (Oct 27, 2026, 1:00 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	88da17436973e463bed59bea79771fb03a21555e builds before 54ee74307165b348b2fddcd7942eb48fb4ee1237; from 88da17436973e463bed59bea79771fb03a21555e before c001214e12202338425d6dda5d2a1919d674282d; from 88da17436973e463bed59bea79771fb03a21555e before f6d80b104f904a6da922907394eec66d3e2ffc57; from 88da17436973e463bed59bea79771fb03a21555e before 7724645c4792914cd07f36718816c5369cc57970; from 88da17436973e463bed59bea79771fb03a21555e before 952caa5da10bed22be09612433964f6877ba0dde	CNA record
linux linux_kernel linux:linux_kernel	from 6.5.1 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17; from 6.19 before 6.19.7; 6.5; 7.0; 7.0; 7.0; and 4 more ranges	NVD

References

References

https://git.kernel.org/stable/c/54ee74307165b348b2fddcd7942eb48fb4ee1237	patch
https://git.kernel.org/stable/c/c001214e12202338425d6dda5d2a1919d674282d	patch
https://git.kernel.org/stable/c/f6d80b104f904a6da922907394eec66d3e2ffc57	patch
https://git.kernel.org/stable/c/7724645c4792914cd07f36718816c5369cc57970	patch
https://git.kernel.org/stable/c/952caa5da10bed22be09612433964f6877ba0dde	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.