{"id":"CVE-2026-98601","revision":"f278a2fe98a94189933023f60cf3a6b1","records":[{"revision":"f278a2fe98a94189933023f60cf3a6b1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98601","aliases":[],"title":"Bluetooth: btintel_pcie: validate device-supplied DMA indices","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate device-supplied DMA indices\n\nIn btintel_pcie_msix_rx_handle(), the driver processes RX completion\ndescriptors (urbd1) written by the PCIe device into DMA-coherent memory.\nurbd1->frbd_tag (a 16-bit field fully controlled by the device firmware\nvia DMA) is used directly as an array index into rxq->bufs[] without any\nbounds check. rxq->bufs[] has only BTINTEL_PCIE_RX_DESCS_COUNT (64)\nentries, while frbd_tag can be any value 0-65535. A malicious or\nmalfunctioning device can write an out-of-range frbd_tag, causing the\ndriver to dereference an out-of-bounds data_buf pointer.\n\nAdditionally, cr_hia is read from a DMA-shared index array also writable\nby the device; if the device sets cr_hia >= rxq->count, the while-loop\nnever terminates because cr_tia is wrapped via modulo rxq->count and can\nnever equal an out-of-range cr_hia.\n\nAdd bounds validation for cr_hia and frbd_tag in the RX path, and cr_hia\nin the TX path. Log invalid values with bt_dev_err before returning.","state":0,"publishedAt":"2026-10-18T15:19:13.76+00:00","modifiedAt":"2026-10-19T09:22:28.028+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/btintel_pcie.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c2b636b3f788d10486a6691ad6dd3ec4c93bd78e\",\n                            \"lessThan\": \"f42cd95e679d5b78611cd2208cd1c41ad0045ffa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2b636b3f788d10486a6691ad6dd3ec4c93bd78e\",\n                            \"lessThan\": \"8ec5838a35b03ac0cf3602452a369898051ffaf9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2b636b3f788d10486a6691ad6dd3ec4c93bd78e\",\n                            \"lessThan\": \"b29b70bfa12133423924fcd0327c19a802f7e368\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2b636b3f788d10486a6691ad6dd3ec4c93bd78e\",\n                            \"lessThan\": \"37a11129345337efd6eef8e62b03b6348cd0dd8b\",\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/btintel_pcie.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\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":[],"references":["https://git.kernel.org/stable/c/f42cd95e679d5b78611cd2208cd1c41ad0045ffa","https://git.kernel.org/stable/c/8ec5838a35b03ac0cf3602452a369898051ffaf9","https://git.kernel.org/stable/c/b29b70bfa12133423924fcd0327c19a802f7e368","https://git.kernel.org/stable/c/37a11129345337efd6eef8e62b03b6348cd0dd8b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98601","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98601","identifiers":["CVE-2026-98601"]},"retained":false,"historicalAffected":[]}],"coverage":[]}