{"id":"CVE-2026-53251","state":"PUBLISHED","title":"Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync","description":"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 exits normally or with an error without ever\nreleasing it.","publishedAt":"2026-06-25T08:39:43.290Z","updatedAt":"2026-06-25T08:39:43.290Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1360e5b6ce63d63d23223a659ca2bbafa30a53aa","status":"affected","lessThan":"4bbec25f47b930101294fd310c627c3f53e9661f","versionType":"git"},{"version":"07a9342b94a91b306ed1cf6aa8254aea210764c9","status":"affected","lessThan":"33d677d2e3713d98012c3dbd4a9207f7d785b854","versionType":"git"},{"version":"07a9342b94a91b306ed1cf6aa8254aea210764c9","status":"affected","lessThan":"23e8eb16820b866528fb300dc67fe3f67f00ef62","versionType":"git"},{"version":"07a9342b94a91b306ed1cf6aa8254aea210764c9","status":"affected","lessThan":"5cbf290b79351971f20c7a533247e8d58a3f970c","versionType":"git"},{"version":"bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed","status":"affected","versionType":"git"},{"version":"6.12.2","status":"affected","lessThan":"6.12.94","versionType":"semver"},{"version":"6.11.11","status":"affected","lessThan":"6.12","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/iso.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/iso.c"]}],"references":["https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f","https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854","https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62","https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53251.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53251","state":"PUBLISHED","datePublished":"2026-06-25T08:39:43.290Z","dateUpdated":"2026-06-25T08:39:43.290Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.394Z"},"containers":{"cna":{"title":"Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync","descriptions":[{"lang":"en","value":"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 exits normally or with an error without ever\nreleasing it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1360e5b6ce63d63d23223a659ca2bbafa30a53aa","status":"affected","lessThan":"4bbec25f47b930101294fd310c627c3f53e9661f","versionType":"git"},{"version":"07a9342b94a91b306ed1cf6aa8254aea210764c9","status":"affected","lessThan":"33d677d2e3713d98012c3dbd4a9207f7d785b854","versionType":"git"},{"version":"07a9342b94a91b306ed1cf6aa8254aea210764c9","status":"affected","lessThan":"23e8eb16820b866528fb300dc67fe3f67f00ef62","versionType":"git"},{"version":"07a9342b94a91b306ed1cf6aa8254aea210764c9","status":"affected","lessThan":"5cbf290b79351971f20c7a533247e8d58a3f970c","versionType":"git"},{"version":"bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed","status":"affected","versionType":"git"},{"version":"6.12.2","status":"affected","lessThan":"6.12.94","versionType":"semver"},{"version":"6.11.11","status":"affected","lessThan":"6.12","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/iso.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/iso.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-25T08:39:43.290Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.2","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11.11"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}