{"id":"CVE-2025-68308","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: kvaser_usb: leaf: Fix potential infinite loop in command parsers\n\nThe `kvaser_usb_leaf_wait_cmd()` and `kvaser_usb_leaf_read_bulk_callback`\nfunctions contain logic…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: kvaser_usb: leaf: Fix potential infinite loop in command parsers\n\nThe `kvaser_usb_leaf_wait_cmd()` and `kvaser_usb_leaf_read_bulk_callback`\nfunctions contain logic…","severity":"none","published":"2025-12-16","updated":"2026-10-14","sourceUpdated":"2026-10-14T16:10:00.250","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-68308","references":[{"url":"https://git.kernel.org/stable/c/028e89c7e8b4346302e88df01cc50e0a1f05791a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0897cea266e39166a36111059ba147192b36592f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0c73772cd2b8cc108d5f5334de89ad648d89b9ec","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/58343e0a4d43699f0e2f5b169384bbe4c0217add","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/69c7825df64e24dc15d31631a1fc9145324b1345","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bd8135a560cf6e64f0b98ed4daadf126a38f7f48","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e9dd83a75a7274edef21682c823bf0b66d7b6b7f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00191,"epssPercentile":0.08132,"ingestedAt":"2026-10-14T16:40:32.054Z","slug":"CVE-2025-68308","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncan: kvaser_usb: leaf: Fix potential infinite loop in command parsers\n\nThe `kvaser_usb_leaf_wait_cmd()` and `kvaser_usb_leaf_read_bulk_callback`\nfunctions contain logic to zero-length commands. These commands are used\nto align data to the USB endpoint's wMaxPacketSize boundary.\n\nThe driver attempts to skip these placeholders by aligning the buffer\nposition `pos` to the next packet boundary using `round_up()` function.\n\nHowever, if zero-length command is found exactly on a packet boundary\n(i.e., `pos` is a multiple of wMaxPacketSize, including 0), `round_up`\nfunction will return the unchanged value of `pos`. This prevents `pos`\nto be increased, causing an infinite loop in the parsing logic.\n\nThis patch fixes this in the function by using `pos + 1` instead.\nThis ensures that even if `pos` is on a boundary, the calculation is\nbased on `pos + 1`, forcing `round_up()` to always return the next\naligned boundary.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}