{"id":"CVE-2026-90089","revision":"cc49f99fe747467484bbaaa41862c017","records":[{"revision":"cc49f99fe747467484bbaaa41862c017","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90089","aliases":[],"title":"Bluetooth: btnxpuart: Validate the FW dump header length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btnxpuart: Validate the FW dump header length\n\nnxp_process_fw_dump() pulls the ACL header off the frame and then reads\nseq_num and buf_len from a struct nxp_fw_dump_hdr placed at skb->data,\nwithout checking that the ACL payload is long enough to contain it.\n\nh4_recv_buf() collects HCI_ACL_HDR_SIZE bytes of header followed by the\nnumber of payload bytes named in that header, so skb->len is 4 + dlen\nwith dlen supplied by the controller and possibly smaller than the 8\nbyte dump header, or zero. A short frame with connection handle 0xfff\ntherefore reads both fields from beyond the received data.\n\nBeyond the read itself, buf_len is what terminates a dump: a value of\nzero makes the driver call hci_devcd_complete() and reset the\ncontroller, so a truncated frame can end a dump early.\n\nUse skb_pull_data() to validate and pull the FW dump header before\naccessing its fields. Warn and reject the chunk if the header is\ntruncated.","state":0,"publishedAt":"2026-09-17T16:06:04.201+00:00","modifiedAt":"2026-10-19T08:57:47.078+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/bluetooth/btnxpuart.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"998e447f443f138c90faa6ff3845082af419070e\",\n                            \"lessThan\": \"a644b8df94966b672ac656577df98bd01bc88393\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"998e447f443f138c90faa6ff3845082af419070e\",\n                            \"lessThan\": \"22d419db7f9a01bea22cfcf66774d2b2fd4bb354\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"998e447f443f138c90faa6ff3845082af419070e\",\n                            \"lessThan\": \"060fa7592bdc043a93b6b7870f5b8551206d315d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/bluetooth/btnxpuart.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/a644b8df94966b672ac656577df98bd01bc88393","https://git.kernel.org/stable/c/22d419db7f9a01bea22cfcf66774d2b2fd4bb354","https://git.kernel.org/stable/c/060fa7592bdc043a93b6b7870f5b8551206d315d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90089","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90089","identifiers":["CVE-2026-90089"]},"retained":false,"historicalAffected":[]}],"coverage":[]}