{"id":"CVE-2026-93785","published":"2026-09-24T17:17:11.130","lastModified":"2026-09-25T13:17:19.053","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: validate idmap key payload length\n\nThe cifs.idmap key type stores its payload length in key->datalen, which\nis limited to U16_MAX.  Accepting a larger key payload truncates the\nrecorded length and can make later users interpret the payload using\ninconsistent bounds.\n\nReject oversized preparsed payloads before allocating or copying them.\nThis keeps key->datalen consistent with the stored data for both inline\nand separately allocated idmap payloads.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/455488cd5054bcc59db40fa1cc2c004031a5b2a5","tags":[]},{"url":"https://git.kernel.org/stable/c/6cfeef221ac00d63c07f6122f58e6159bde69ca0","tags":[]},{"url":"https://git.kernel.org/stable/c/8b12f65d7caf16d124098cb4895a203367d35b57","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}