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Vulnerability Details CVE-2026-23298

In the Linux kernel, the following vulnerability has been resolved: can: ucan: Fix infinite loop from zero-length messages If a broken ucan device gets a message with the message length field set to 0, then the driver will loop for forever in ucan_read_bulk_callback(), hanging the system. If the length is 0, just skip the message and go on to the next one. This has been fixed in the kvaser_usb driver in the past in commit 0c73772cd2b8 ("can: kvaser_usb: leaf: Fix potential infinite loop in command parsers"), so there must be some broken devices out there like this somewhere.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.4%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2026-23298


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