{"cve":"CVE-2026-74300","nvd":{"published":"2026-08-15T06:22:29.610","modified":"2026-10-16T19:17:37.873","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci: validate codec capability element length\n\nRead Local Codec Capabilities returns a sequence of capability elements.\nEach element starts with a one-byte length followed by that many payload\nbytes.\n\nhci_read_codec_capabilities() checks that the skb contains the length\nbyte, but then validates only caps->len against the remaining skb\nlength.  A malformed controller response with one remaining byte and\ncaps->len set to one passes that check even though the element needs two\nbytes.  The parser then records a two-byte capability and copies one\nbyte beyond the advertised response payload into the codec list.\n\nValidate the full element size, including the length byte, before adding\nit to the accumulated capability length.  This preserves all well-formed\ncapability elements and drops only truncated controller responses.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":[],"references":["https://git.kernel.org/stable/c/290b36f9d1eb9b2f72b40d826f26b4a182ab15f7","https://git.kernel.org/stable/c/4bc16db0f11918e07edf9fdcda4a30cf4c9df45c","https://git.kernel.org/stable/c/c38fbcdc407925c7088f7e5f11c1fff73d2d35a2","https://git.kernel.org/stable/c/ec4d352747a62c1082f16c11a74b37d6eb85a5a3","https://git.kernel.org/stable/c/f2ad01f55e07f9531efcea736087e6b8658a3440"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-74300","score":0.00403,"percentile":0.34237,"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."]}