{"id":"CVE-2026-43019","revision":"a1416e48ea8d4c8abaa2ba936f43a283","records":[{"revision":"a1416e48ea8d4c8abaa2ba936f43a283","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43019","aliases":[],"title":"Bluetooth: hci_conn: fix potential UAF in set_cig_params_sync","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: fix potential UAF in set_cig_params_sync\n\nhci_conn lookup and field access must be covered by hdev lock in\nset_cig_params_sync, otherwise it's possible it is freed concurrently.\n\nTake hdev lock to prevent hci_conn from being deleted or modified\nconcurrently.  Just RCU lock is not suitable here, as we also want to\navoid \"tearing\" in the configuration.","state":0,"publishedAt":"2026-05-01T14:15:23.035+00:00","modifiedAt":"2026-10-19T19:06:09.77+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                        \"net/bluetooth/hci_conn.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a091289218202bc09d9b9caa8afcde1018584aec\",\n                            \"lessThan\": \"7502c1cf303b69f71d085f5ff7251b0e1b0f09df\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a091289218202bc09d9b9caa8afcde1018584aec\",\n                            \"lessThan\": \"66d432e9b45bae7881ffcdb12cd8fd0bf254ef02\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a091289218202bc09d9b9caa8afcde1018584aec\",\n                            \"lessThan\": \"7d568fede8eac91161a60b710aa920abe9b0fb9f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a091289218202bc09d9b9caa8afcde1018584aec\",\n                            \"lessThan\": \"bad65b4b0a96139f023eadc28a33125963208449\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a091289218202bc09d9b9caa8afcde1018584aec\",\n                            \"lessThan\": \"a2639a7f0f5bf7d73f337f8f077c19415c62ed2c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3a273cd0f47dd672d37736e623849374f9ab9ce9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d8570c4c3f2a3e51b3c8b5e6ec898364c5c03062\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.4.16\",\n                            \"lessThan\": \"6.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.5.3\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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                        \"net/bluetooth/hci_conn.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.143\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.81\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.22\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.12\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/7502c1cf303b69f71d085f5ff7251b0e1b0f09df","https://git.kernel.org/stable/c/66d432e9b45bae7881ffcdb12cd8fd0bf254ef02","https://git.kernel.org/stable/c/7d568fede8eac91161a60b710aa920abe9b0fb9f","https://git.kernel.org/stable/c/bad65b4b0a96139f023eadc28a33125963208449","https://git.kernel.org/stable/c/a2639a7f0f5bf7d73f337f8f077c19415c62ed2c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43019","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43019","identifiers":["CVE-2026-43019"]},"retained":false,"historicalAffected":[]}],"coverage":[]}