{"id":"CVE-2026-53251","title":"Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync\n\nhci_get_route() returns a reference-counted hci_dev pointer via\nhci_dev_hold(). The function exit…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1360e5b6ce63d63d23223a659ca2bbafa30a53aa < 4bbec25f47b930101294fd310c627c3f53e9661f","Linux >= 07a9342b94a91b306ed1cf6aa8254aea210764c9 < 33d677d2e3713d98012c3dbd4a9207f7d785b854","Linux >= 07a9342b94a91b306ed1cf6aa8254aea210764c9 < 23e8eb16820b866528fb300dc67fe3f67f00ef62","Linux >= 07a9342b94a91b306ed1cf6aa8254aea210764c9 < 5cbf290b79351971f20c7a533247e8d58a3f970c","Linux bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed","Linux >= 6.12.2 < 6.12.94","Linux >= 6.11.11 < 6.12","Linux 6.13"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:23:57.222634Z"},"published":"2026-06-25","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:34:15.727Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53251","references":[{"url":"https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f"},{"url":"https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854"},{"url":"https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62"},{"url":"https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c"}],"tags":["cve.org"],"epss":0.00122,"epssPercentile":0.01987,"ingestedAt":"2026-11-06T16:57:43.261Z","slug":"CVE-2026-53251","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync\n\nhci_get_route() returns a reference-counted hci_dev pointer via\nhci_dev_hold(). The function exits normally or with an error without ever\nreleasing it.\n\n## Affected\n\n- `Linux >= 1360e5b6ce63d63d23223a659ca2bbafa30a53aa < 4bbec25f47b930101294fd310c627c3f53e9661f`\n- `Linux >= 07a9342b94a91b306ed1cf6aa8254aea210764c9 < 33d677d2e3713d98012c3dbd4a9207f7d785b854`\n- `Linux >= 07a9342b94a91b306ed1cf6aa8254aea210764c9 < 23e8eb16820b866528fb300dc67fe3f67f00ef62`\n- `Linux >= 07a9342b94a91b306ed1cf6aa8254aea210764c9 < 5cbf290b79351971f20c7a533247e8d58a3f970c`\n- `Linux bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed`\n- `Linux >= 6.12.2 < 6.12.94`\n- `Linux >= 6.11.11 < 6.12`\n- `Linux 6.13`\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":[]}