{"id":"CVE-2026-98456","revision":"e3d715e5ee394275abb361cffd06f612","records":[{"revision":"e3d715e5ee394275abb361cffd06f612","observedAt":"2026-10-24T16:17:04.479+00:00","statement":{"source":"cve-program","id":"CVE-2026-98456","aliases":[],"title":"Bluetooth: mgmt: fix race in read_unconf_index_list()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: fix race in read_unconf_index_list()\n\nread_unconf_index_list() counts unconfigured controllers before allocating\nits response, then checks the device flags again while filling it.\n\nhci_dev_list_lock stabilizes list membership, but it does not serialize the\nper-device flags. During asynchronous controller setup, the worker can set\nHCI_UNCONFIGURED and clear HCI_SETUP between the two passes. A controller\nomitted from the allocation count can then become eligible for the fill\npass, causing an out-of-bounds write to rp->index[].\n\nAllocate space for every device on hci_dev_list. Since list membership\ncannot change while hci_dev_list_lock is held, the response remains large\nenough regardless of flag transitions. The reported count and response\nlength still include only eligible unconfigured controllers.","state":0,"publishedAt":"2026-10-18T15:15:05.909+00:00","modifiedAt":"2026-10-24T14:08:55.253+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/mgmt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"73d1df2a7a1036a1f000e5f0ece6ade3e082b854\",\n                            \"lessThan\": \"524e0450dd9a396f99a81b045219b0e2ea0dab57\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"73d1df2a7a1036a1f000e5f0ece6ade3e082b854\",\n                            \"lessThan\": \"8ddf962c76432a10a6cb80042875cbc48a9c056b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"73d1df2a7a1036a1f000e5f0ece6ade3e082b854\",\n                            \"lessThan\": \"416546cd6a54e9b68f2b91bc680b1ee17dcd77a1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"73d1df2a7a1036a1f000e5f0ece6ade3e082b854\",\n                            \"lessThan\": \"2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"73d1df2a7a1036a1f000e5f0ece6ade3e082b854\",\n                            \"lessThan\": \"b5dbb41b212c50c095a4dbee3017a84fe94f033b\",\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                        \"net/bluetooth/mgmt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/524e0450dd9a396f99a81b045219b0e2ea0dab57","https://git.kernel.org/stable/c/8ddf962c76432a10a6cb80042875cbc48a9c056b","https://git.kernel.org/stable/c/416546cd6a54e9b68f2b91bc680b1ee17dcd77a1","https://git.kernel.org/stable/c/2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1","https://git.kernel.org/stable/c/b5dbb41b212c50c095a4dbee3017a84fe94f033b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98456","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98456","identifiers":["CVE-2026-98456"]},"retained":false,"historicalAffected":[]}],"coverage":[]}