CVE-2026-98462

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98462", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.350Z", "datePublished": "2026-10-18T15:15:11.696Z", "dateUpdated": "2026-10-19T09:19:59.841Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:19:59.841Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: fix CIS hold ownership on reuse\n\nCommit 69997d50ec57 (\"Bluetooth: ISO: handle bound CIS cleanup via\nhci_conn\") made hci_bind_cis() and hci_connect_cis() return a\nconnection with one hold for the ISO layer. hci_bind_cis() currently\ntakes that hold only after configuring a CIS, so its BT_CONNECTED and\nmatching BT_BOUND paths return a bare lookup result. Its configuration\nfailure path can likewise call hci_conn_drop() before taking a hold.\n\nTake the hold before any state-dependent return or configuration error\nso every successful return follows the documented ownership contract\nand every error drop is balanced.\n\nhci_connect_cis() also assumes hci_conn_link() always takes a new CIS\nhold before dropping the one returned by hci_bind_cis(). However, the\nhelper returns an existing link without taking another hold. In that\ncase, preserve the CIS hold for the caller and drop the redundant LE\nhold because the existing link already owns its parent hold. Returning\nearly also avoids changing an existing CIS back to BT_CONNECT."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_conn.c"], "versions": [{"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "lessThan": "10f959cb435217b4b407864e5be0eb779e389490", "status": "affected", "versionType": "git"}, {"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "lessThan": "072bc8659f22566083f8eef7dc5903bbcaf7804a", "status": "affected", "versionType": "git"}, {"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "lessThan": "3ff5a8d949e3a2a435d0a5ee05074cd371b0158a", "status": "affected", "versionType": "git"}, {"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "lessThan": "947eb2f41f70d371eb16897ee4e8e32bff73b476", "status": "affected", "versionType": "git"}, {"version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "lessThan": "e06d549fcd4a0ba381ed67ddf1ab3c7a6ca4314c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_conn.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/10f959cb435217b4b407864e5be0eb779e389490"}, {"url": "https://git.kernel.org/stable/c/072bc8659f22566083f8eef7dc5903bbcaf7804a"}, {"url": "https://git.kernel.org/stable/c/3ff5a8d949e3a2a435d0a5ee05074cd371b0158a"}, {"url": "https://git.kernel.org/stable/c/947eb2f41f70d371eb16897ee4e8e32bff73b476"}, {"url": "https://git.kernel.org/stable/c/e06d549fcd4a0ba381ed67ddf1ab3c7a6ca4314c"}], "title": "Bluetooth: hci_conn: fix CIS hold ownership on reuse", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"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": "10f959cb435217b4b407864e5be0eb779e389490", "status": "affected", "version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "versionType": "git"}, {"lessThan": "072bc8659f22566083f8eef7dc5903bbcaf7804a", "status": "affected", "version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "versionType": "git"}, {"lessThan": "3ff5a8d949e3a2a435d0a5ee05074cd371b0158a", "status": "affected", "version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "versionType": "git"}, {"lessThan": "947eb2f41f70d371eb16897ee4e8e32bff73b476", "status": "affected", "version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "versionType": "git"}, {"lessThan": "e06d549fcd4a0ba381ed67ddf1ab3c7a6ca4314c", "status": "affected", "version": "69997d50ec574be816b4ee8f9cee52ebbd53f8bd", "versionType": "git"}]}, {"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": "6.6"}, {"lessThan": "6.6", "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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: fix CIS hold ownership on reuse\n\nCommit 69997d50ec57 (\"Bluetooth: ISO: handle bound CIS cleanup via\nhci_conn\") made hci_bind_cis() and hci_connect_cis() return a\nconnection with one hold for the ISO layer. hci_bind_cis() currently\ntakes that hold only after configuring a CIS, so its BT_CONNECTED and\nmatching BT_BOUND paths return a bare lookup result. Its configuration\nfailure path can likewise call hci_conn_drop() before taking a hold.\n\nTake the hold before any state-dependent return or configuration error\nso every successful return follows the documented ownership contract\nand every error drop is balanced.\n\nhci_connect_cis() also assumes hci_conn_link() always takes a new CIS\nhold before dropping the one returned by hci_bind_cis(). However, the\nhelper returns an existing link without taking another hold. In that\ncase, preserve the CIS hold for the caller and drop the redundant LE\nhold because the existing link already owns its parent hold. Returning\nearly also avoids changing an existing CIS back to BT_CONNECT."}], "id": "CVE-2026-98462", "lastModified": "2026-10-19T10:18:55.827", "metrics": {}, "published": "2026-10-18T16:16:56.660", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/072bc8659f22566083f8eef7dc5903bbcaf7804a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10f959cb435217b4b407864e5be0eb779e389490"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ff5a8d949e3a2a435d0a5ee05074cd371b0158a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/947eb2f41f70d371eb16897ee4e8e32bff73b476"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e06d549fcd4a0ba381ed67ddf1ab3c7a6ca4314c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Bluetooth: hci_conn: fix CIS hold ownership on reuse", "id": "2554855", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554855"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: hci_conn: fix CIS hold ownership on reuse\nCommit 69997d50ec57 (\"Bluetooth: ISO: handle bound CIS cleanup via\nhci_conn\") made hci_bind_cis() and hci_connect_cis() return a\nconnection with one hold for the ISO layer. hci_bind_cis() currently\ntakes that hold only after configuring a CIS, so its BT_CONNECTED and\nmatching BT_BOUND paths return a bare lookup result. Its configuration\nfailure path can likewise call hci_conn_drop() before taking a hold.\nTake the hold before any state-dependent return or configuration error\nso every successful return follows the documented ownership contract\nand every error drop is balanced.\nhci_connect_cis() also assumes hci_conn_link() always takes a new CIS\nhold before dropping the one returned by hci_bind_cis(). However, the\nhelper returns an existing link without taking another hold. In that\ncase, preserve the CIS hold for the caller and drop the redundant LE\nhold because the existing link already owns its parent hold. Returning\nearly also avoids changing an existing CIS back to BT_CONNECT.", "A flaw was found in the Linux kernel's Bluetooth subsystem. Improper reference count management during the reuse and binding of Connected Isochronous Stream (CIS) connections can result in an unbalanced connection hold count. A local attacker could exploit this flaw by triggering specific connection setup and error paths, potentially leading to memory corruption or a denial of service (system crash)."], "name": "CVE-2026-98462", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98462\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98462\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98462.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69997d50ec574be816b4ee8f9cee52ebbd53f8bd,10f959cb435217b4b407864e5be0eb779e389490)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69997d50ec574be816b4ee8f9cee52ebbd53f8bd,072bc8659f22566083f8eef7dc5903bbcaf7804a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69997d50ec574be816b4ee8f9cee52ebbd53f8bd,3ff5a8d949e3a2a435d0a5ee05074cd371b0158a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69997d50ec574be816b4ee8f9cee52ebbd53f8bd,947eb2f41f70d371eb16897ee4e8e32bff73b476)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69997d50ec574be816b4ee8f9cee52ebbd53f8bd,e06d549fcd4a0ba381ed67ddf1ab3c7a6ca4314c)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-18T16:45:17.335079+00:00", "updated": "2026-10-20T20:45:14.331367+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}