{"cve":"CVE-2026-93785","nvd":{"published":"2026-09-24T17:17:11.130","modified":"2026-10-03T11:17:48.050","status":"Received","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/125b05ac8ca8758950e4369c1542d57a162f504c","https://git.kernel.org/stable/c/3a4a34a732e8a08309eed0a74314dbd9f2f1c972","https://git.kernel.org/stable/c/455488cd5054bcc59db40fa1cc2c004031a5b2a5","https://git.kernel.org/stable/c/6cfeef221ac00d63c07f6122f58e6159bde69ca0","https://git.kernel.org/stable/c/8b12f65d7caf16d124098cb4895a203367d35b57"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-93785","score":0.00173,"percentile":0.06612,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}