{"api_version":"1","generated_at":"2026-10-27T11:34:12+00:00","cve":"CVE-2026-98459","urls":{"html":"https://cve.report/CVE-2026-98459","api":"https://cve.report/api/cve/CVE-2026-98459.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98459","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98459"},"summary":{"title":"Bluetooth: ISO: balance the parent hold in hci_bind_bis()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: balance the parent hold in hci_bind_bis()\n\nhci_conn_link() takes a lifetime reference to its parent with\nhci_conn_get(), but only takes an operational hold on the child.\nhci_conn_unlink() later balances both a hold and a reference on the\nparent.\n\nThe SCO and CIS paths pass a parent acquired from a connect helper, so\nit already has a hold. For an additional BIS, hci_bind_bis() obtains the\nparent from hci_conn_hash_lookup_big(), which returns a bare pointer.\nUnlinking the child then drops the parent's existing hold and can\nschedule it for disconnection while its socket is still using it.\n\nTake a hold on the parent before linking it and drop that hold if linking\nfails. A successful link transfers the hold to hci_conn_unlink().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:16:56","updated_at":"2026-10-19 10:18:55"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/4c94557dd02569efa6c1072a0439addaef9a5224","name":"https://git.kernel.org/stable/c/4c94557dd02569efa6c1072a0439addaef9a5224","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/03a91cdf6862fb351a74f035ad21e70112438552","name":"https://git.kernel.org/stable/c/03a91cdf6862fb351a74f035ad21e70112438552","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bbcd723ee7a84bc868142fd57717af88e54e555a","name":"https://git.kernel.org/stable/c/bbcd723ee7a84bc868142fd57717af88e54e555a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ff28e6c67143c76ef50c3eac01f2fad411705f71","name":"https://git.kernel.org/stable/c/ff28e6c67143c76ef50c3eac01f2fad411705f71","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4e49206d9574a4c109480198e73aea34ad0ed7f6","name":"https://git.kernel.org/stable/c/4e49206d9574a4c109480198e73aea34ad0ed7f6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98459","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98459","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 11dc486ed5d4626e6b92a23b67ed76cb6c48bfc9 ff28e6c67143c76ef50c3eac01f2fad411705f71 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa224d0c094a458e9ebf5ea9b1c696136b7af427 03a91cdf6862fb351a74f035ad21e70112438552 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa224d0c094a458e9ebf5ea9b1c696136b7af427 4e49206d9574a4c109480198e73aea34ad0ed7f6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa224d0c094a458e9ebf5ea9b1c696136b7af427 bbcd723ee7a84bc868142fd57717af88e54e555a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fa224d0c094a458e9ebf5ea9b1c696136b7af427 4c94557dd02569efa6c1072a0439addaef9a5224 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.67 6.6.158 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.112 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.55 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.9 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/hci_conn.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ff28e6c67143c76ef50c3eac01f2fad411705f71","status":"affected","version":"11dc486ed5d4626e6b92a23b67ed76cb6c48bfc9","versionType":"git"},{"lessThan":"03a91cdf6862fb351a74f035ad21e70112438552","status":"affected","version":"fa224d0c094a458e9ebf5ea9b1c696136b7af427","versionType":"git"},{"lessThan":"4e49206d9574a4c109480198e73aea34ad0ed7f6","status":"affected","version":"fa224d0c094a458e9ebf5ea9b1c696136b7af427","versionType":"git"},{"lessThan":"bbcd723ee7a84bc868142fd57717af88e54e555a","status":"affected","version":"fa224d0c094a458e9ebf5ea9b1c696136b7af427","versionType":"git"},{"lessThan":"4c94557dd02569efa6c1072a0439addaef9a5224","status":"affected","version":"fa224d0c094a458e9ebf5ea9b1c696136b7af427","versionType":"git"},{"lessThan":"6.6.158","status":"affected","version":"6.6.67","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/hci_conn.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.112","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.55","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"6.6.67","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.55","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.9","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: balance the parent hold in hci_bind_bis()\n\nhci_conn_link() takes a lifetime reference to its parent with\nhci_conn_get(), but only takes an operational hold on the child.\nhci_conn_unlink() later balances both a hold and a reference on the\nparent.\n\nThe SCO and CIS paths pass a parent acquired from a connect helper, so\nit already has a hold. For an additional BIS, hci_bind_bis() obtains the\nparent from hci_conn_hash_lookup_big(), which returns a bare pointer.\nUnlinking the child then drops the parent's existing hold and can\nschedule it for disconnection while its socket is still using it.\n\nTake a hold on the parent before linking it and drop that hold if linking\nfails. A successful link transfers the hold to hci_conn_unlink()."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:19:55.996Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ff28e6c67143c76ef50c3eac01f2fad411705f71"},{"url":"https://git.kernel.org/stable/c/03a91cdf6862fb351a74f035ad21e70112438552"},{"url":"https://git.kernel.org/stable/c/4e49206d9574a4c109480198e73aea34ad0ed7f6"},{"url":"https://git.kernel.org/stable/c/bbcd723ee7a84bc868142fd57717af88e54e555a"},{"url":"https://git.kernel.org/stable/c/4c94557dd02569efa6c1072a0439addaef9a5224"}],"title":"Bluetooth: ISO: balance the parent hold in hci_bind_bis()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98459","datePublished":"2026-10-18T15:15:08.537Z","dateReserved":"2026-09-25T10:25:14.350Z","dateUpdated":"2026-10-19T09:19:55.996Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:16:56","lastModifiedDate":"2026-10-19 10:18:55","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98459","Ordinal":"1","Title":"Bluetooth: ISO: balance the parent hold in hci_bind_bis()","CVE":"CVE-2026-98459","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98459","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: balance the parent hold in hci_bind_bis()\n\nhci_conn_link() takes a lifetime reference to its parent with\nhci_conn_get(), but only takes an operational hold on the child.\nhci_conn_unlink() later balances both a hold and a reference on the\nparent.\n\nThe SCO and CIS paths pass a parent acquired from a connect helper, so\nit already has a hold. For an additional BIS, hci_bind_bis() obtains the\nparent from hci_conn_hash_lookup_big(), which returns a bare pointer.\nUnlinking the child then drops the parent's existing hold and can\nschedule it for disconnection while its socket is still using it.\n\nTake a hold on the parent before linking it and drop that hold if linking\nfails. A successful link transfers the hold to hci_conn_unlink().","Type":"Description","Title":"Bluetooth: ISO: balance the parent hold in hci_bind_bis()"}]}}}