{"id":"CVE-2026-98735","title":"kernel: Bluetooth: hci_core: Serialize ACL scheduling with channel deletion (CVE-2026-98735)","summary":"A flaw was found in the Linux kernel's Bluetooth subsystem. A race condition occurs when outgoing network packets are scheduled while the associated communication channel is concurrently closed and freed during connection teardown. A local…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T01:35:29+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98735.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98735.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98735"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555083"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98735"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98735"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98735.mbox"},{"url":"https://git.kernel.org/stable/c/780affacd92977fd9b819bdc4f26a6832cb27fda"},{"url":"https://git.kernel.org/stable/c/51f95ea451f25d7e3f048c0f438f04fa74688aae"},{"url":"https://git.kernel.org/stable/c/86e9708f9d19a7f1bd5dc9c1652d07707f79f5bd"},{"url":"https://git.kernel.org/stable/c/4fda8f0abeea9929036446d89a476fb8298abcb0"},{"url":"https://git.kernel.org/stable/c/f4845ab191a4f686a5da481fbba90ed73bb693b0"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05969,"ingestedAt":"2026-10-18T16:47:32.504Z","slug":"CVE-2026-98735","body":"## Overview\n\nA flaw was found in the Linux kernel's Bluetooth subsystem. A race condition occurs when outgoing network packets are scheduled while the associated communication channel is concurrently closed and freed during connection teardown. A local attacker could exploit this flaw to trigger a use-after-free memory error, leading to a system crash (denial of service) or potentially arbitrary code execution.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98735.json)\n\n**kernel: Bluetooth: hci_core: Serialize ACL scheduling with channel deletion** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nOut of support scope","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228222,"id":"CVE-2026-98735","ts":1792758207204,"field":"cvss","old":null,"new":"4.7"},{"seq":228221,"id":"CVE-2026-98735","ts":1792758207204,"field":"severity","old":"none","new":"medium"}]}