{"id":"CVE-2026-43021","title":"Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails\n\nWhen hci_cmd_sync_queue_once() returns with error, the destroy callback\nwill not be called.\n\nFix leak…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a106e50be74b0896583f4d010a69f9806e4194f4 < 7fd74178d4b16dcf47179da634ea9d7c02e3608b","Linux >= a106e50be74b0896583f4d010a69f9806e4194f4 < aca377208e7f7322bf4e107cdec6e7d7e8aa7a88","Linux 6.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:26:08.758364Z"},"published":"2026-05-01","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:32:26.573Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43021","references":[{"url":"https://git.kernel.org/stable/c/7fd74178d4b16dcf47179da634ea9d7c02e3608b"},{"url":"https://git.kernel.org/stable/c/aca377208e7f7322bf4e107cdec6e7d7e8aa7a88"}],"tags":["cve.org"],"epss":0.00107,"epssPercentile":0.01157,"ingestedAt":"2026-11-06T15:54:04.035Z","slug":"CVE-2026-43021","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails\n\nWhen hci_cmd_sync_queue_once() returns with error, the destroy callback\nwill not be called.\n\nFix leaking references / memory on these failures.\n\n## Affected\n\n- `Linux >= a106e50be74b0896583f4d010a69f9806e4194f4 < 7fd74178d4b16dcf47179da634ea9d7c02e3608b`\n- `Linux >= a106e50be74b0896583f4d010a69f9806e4194f4 < aca377208e7f7322bf4e107cdec6e7d7e8aa7a88`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}