{"id":"CVE-2026-43022","state":"PUBLISHED","title":"Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists\n\nhci_cmd_sync_queue_once() needs to indicate whether a queue item was\nadded, so caller can know if callbacks are called, so it can avoid\nleaking resources.\n\nChange the function to return -EEXIST if queue item already exists.\n\nModify all callsites to handle that.","publishedAt":"2026-05-01T14:15:25.059Z","updatedAt":"2026-10-30T12:24:48.669Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f00f36db76eb8fd10d13e80e2590f23b5beaa54d","status":"affected","lessThan":"da531f7108218ab6a779861e4646562fc769c9b3","versionType":"git"},{"version":"1499f79995c7ee58e3bfeeff75f6d1b37dcda881","status":"affected","lessThan":"dfee8da127bafa46530b72347bce3ccae736296d","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"5cfa4f537a056c91ac6c09bc3ab58a4455217df7","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"0ad2ce230b38cd4b3f6732cc609e270461e626e5","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"2969554bcfccb5c609f6b6cd4a014933f3a66dd0","versionType":"git"},{"version":"357603f4d396d85fbf0045512efaf1d7f7394ed7","status":"affected","versionType":"git"},{"version":"6.1.120","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"6.6.51","status":"affected","lessThan":"6.6.160","versionType":"semver"},{"version":"6.8.9","status":"affected","lessThan":"6.9","versionType":"semver"}],"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":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","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/da531f7108218ab6a779861e4646562fc769c9b3","https://git.kernel.org/stable/c/dfee8da127bafa46530b72347bce3ccae736296d","https://git.kernel.org/stable/c/799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979","https://git.kernel.org/stable/c/5cfa4f537a056c91ac6c09bc3ab58a4455217df7","https://git.kernel.org/stable/c/0ad2ce230b38cd4b3f6732cc609e270461e626e5","https://git.kernel.org/stable/c/2969554bcfccb5c609f6b6cd4a014933f3a66dd0"],"weaknesses":[],"ingestedAt":"2026-10-30T12:42:04.495Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43022.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43022","state":"PUBLISHED","datePublished":"2026-05-01T14:15:25.059Z","dateUpdated":"2026-10-30T12:24:48.669Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.975Z"},"containers":{"cna":{"title":"Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists\n\nhci_cmd_sync_queue_once() needs to indicate whether a queue item was\nadded, so caller can know if callbacks are called, so it can avoid\nleaking resources.\n\nChange the function to return -EEXIST if queue item already exists.\n\nModify all callsites to handle that."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f00f36db76eb8fd10d13e80e2590f23b5beaa54d","status":"affected","lessThan":"da531f7108218ab6a779861e4646562fc769c9b3","versionType":"git"},{"version":"1499f79995c7ee58e3bfeeff75f6d1b37dcda881","status":"affected","lessThan":"dfee8da127bafa46530b72347bce3ccae736296d","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"5cfa4f537a056c91ac6c09bc3ab58a4455217df7","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"0ad2ce230b38cd4b3f6732cc609e270461e626e5","versionType":"git"},{"version":"505ea2b295929e7be2b4e1bc86ee31cb7862fb01","status":"affected","lessThan":"2969554bcfccb5c609f6b6cd4a014933f3a66dd0","versionType":"git"},{"version":"357603f4d396d85fbf0045512efaf1d7f7394ed7","status":"affected","versionType":"git"},{"version":"6.1.120","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"6.6.51","status":"affected","lessThan":"6.6.160","versionType":"semver"},{"version":"6.8.9","status":"affected","lessThan":"6.9","versionType":"semver"}],"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":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","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/da531f7108218ab6a779861e4646562fc769c9b3"},{"url":"https://git.kernel.org/stable/c/dfee8da127bafa46530b72347bce3ccae736296d"},{"url":"https://git.kernel.org/stable/c/799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979"},{"url":"https://git.kernel.org/stable/c/5cfa4f537a056c91ac6c09bc3ab58a4455217df7"},{"url":"https://git.kernel.org/stable/c/0ad2ce230b38cd4b3f6732cc609e270461e626e5"},{"url":"https://git.kernel.org/stable/c/2969554bcfccb5c609f6b6cd4a014933f3a66dd0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:24:48.669Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.120","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.51","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}