{"id":"CVE-2026-43021","state":"PUBLISHED","title":"Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails","description":"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 leaking references / memory on these failures.","publishedAt":"2026-05-01T14:15:24.374Z","updatedAt":"2026-05-11T22:16:10.521Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a106e50be74b0896583f4d010a69f9806e4194f4","status":"affected","lessThan":"7fd74178d4b16dcf47179da634ea9d7c02e3608b","versionType":"git"},{"version":"a106e50be74b0896583f4d010a69f9806e4194f4","status":"affected","lessThan":"aca377208e7f7322bf4e107cdec6e7d7e8aa7a88","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_sync.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_sync.c"]}],"references":["https://git.kernel.org/stable/c/7fd74178d4b16dcf47179da634ea9d7c02e3608b","https://git.kernel.org/stable/c/aca377208e7f7322bf4e107cdec6e7d7e8aa7a88"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43021.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43021","state":"PUBLISHED","datePublished":"2026-05-01T14:15:24.374Z","dateUpdated":"2026-05-11T22:16:10.521Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.975Z"},"containers":{"cna":{"title":"Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails","descriptions":[{"lang":"en","value":"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 leaking references / memory on these failures."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a106e50be74b0896583f4d010a69f9806e4194f4","status":"affected","lessThan":"7fd74178d4b16dcf47179da634ea9d7c02e3608b","versionType":"git"},{"version":"a106e50be74b0896583f4d010a69f9806e4194f4","status":"affected","lessThan":"aca377208e7f7322bf4e107cdec6e7d7e8aa7a88","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_sync.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_sync.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7fd74178d4b16dcf47179da634ea9d7c02e3608b"},{"url":"https://git.kernel.org/stable/c/aca377208e7f7322bf4e107cdec6e7d7e8aa7a88"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:16:10.521Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}