{"id":"CVE-2026-23298","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-23298","generatedAt":"2026-10-28T03:38:45.127Z","title":"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…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: Fix infinite loop from zero-length messages\n\nIf a broken ucan device gets a message with the message length field set\nto 0, then the driver will loop for forever in\nucan_read_bulk_callback(), hanging the system.  If the length is 0, just\nskip the message and go on to the next one.\n\nThis has been fixed in the kvaser_usb driver in the past in commit\n0c73772cd2b8 (\"can: kvaser_usb: leaf: Fix potential infinite loop in\ncommand parsers\"), so there must be some broken devices out there like\nthis somewhere.","published":"2026-03-25T11:16:25.000Z","lastModified":"2026-06-17T10:21:17.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-835"],"affected":["linux/linux kernel"],"epss":{"score":0.00127,"percentile":0.02382,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23298","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}