{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-42133","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-29T15:50:41.186Z","datePublished":"2024-07-30T07:46:28.632Z","dateUpdated":"2026-08-05T11:35:50.732Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:35:50.732Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Ignore too large handle values in BIG\n\nhci_le_big_sync_established_evt is necessary to filter out cases where the\nhandle value is belonging to ida id range, otherwise ida will be erroneously\nreleased in hci_conn_cleanup."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","baseScore":7.6,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - The vulnerable code is the Bluetooth HCI event path (`hci_le_big_sync_established_evt`), reached only as a consequence of synchronizing to a Broadcast Isochronous Group advertised by a remote device in radio range. Per Bluetooth scoring convention this is Adjacent.\nAC:L - No race, no memory-layout grooming, and no timing dependency — a single BIG Sync Established event carrying a BIS handle above 0x0eff deterministically creates a bogus \"unset\" hci_conn whose teardown always hits the ida_free WARN.\nPR:N - Broadcast/periodic-advertising sync (LE Audio / Auracast) requires no pairing, bonding, or authentication, and no local account is needed; the attacker is an unauthenticated peer in range of a host with LE Audio/ISO enabled.\nUI:N - The event handler runs automatically in `hci_rx_work` as part of normal broadcast-sync processing on a configured ISO sink; no victim action is required at attack time.\nS:U - The corruption is confined to the kernel's own Bluetooth connection hash and IDA state within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:L - The `WARN(1, ...)` in `ida_free()` emits a full register and stack backtrace containing kernel text and heap addresses, giving a bounded KASLR-defeating info leak, and duplicate handles can route inbound ACL/ISO data to the wrong connection; there is no arbitrary read primitive.\nI:L - The bogus handle desynchronizes `hdev->unset_handle_ida` so the same handle is issued to a second live connection and `hci_conn_hash_lookup_handle()` resolves to the wrong `hci_conn`, letting ISO QoS state and L2CAP processing be applied to a mismatched link object. This is bounded kernel-state modification, not an arbitrary write.\nA:H - The bug reliably triggers a kernel WARNING, which is a panic on the many deployments (Android, CI, hardened distros) running with `panic_on_warn`, and the resulting duplicate-handle confusion persistently disrupts Bluetooth connection handling."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_event.c"],"versions":[{"version":"f7e83f2278f06b577e3c92ea2f4e8e8c6fc72a8f","lessThan":"a06a8cc80fa203fde828a8429583f7e4fe27eca4","status":"affected","versionType":"git"},{"version":"84cb0143fb8a03bf941c7aaedd56c938c99dafad","lessThan":"38263088b845abeeeb98dda5b87c0de3063b6dbb","status":"affected","versionType":"git"},{"version":"181a42edddf51d5d9697ecdf365d72ebeab5afb0","lessThan":"dad0003ccc68457baf005a6ed75b4d321463fe3d","status":"affected","versionType":"git"},{"version":"181a42edddf51d5d9697ecdf365d72ebeab5afb0","lessThan":"015d79c96d62cd8a4a359fcf5be40d58088c936b","status":"affected","versionType":"git"},{"version":"e9f708beada55426c8d678e2f46af659eb5bf4f0","status":"affected","versionType":"git"},{"version":"6.6.2","lessThan":"6.6.39","status":"affected","versionType":"semver"},{"version":"6.5.12","lessThan":"6.6","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/hci_event.c"],"versions":[{"version":"6.7","status":"affected"},{"version":"0","lessThan":"6.7","status":"unaffected","versionType":"semver"},{"version":"6.6.39","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9.9","lessThanOrEqual":"6.9.*","status":"unaffected","versionType":"semver"},{"version":"6.10","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.2","versionEndExcluding":"6.6.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.9.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5.12"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a06a8cc80fa203fde828a8429583f7e4fe27eca4"},{"url":"https://git.kernel.org/stable/c/38263088b845abeeeb98dda5b87c0de3063b6dbb"},{"url":"https://git.kernel.org/stable/c/dad0003ccc68457baf005a6ed75b4d321463fe3d"},{"url":"https://git.kernel.org/stable/c/015d79c96d62cd8a4a359fcf5be40d58088c936b"}],"title":"Bluetooth: Ignore too large handle values in BIG","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T04:54:32.554Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/38263088b845abeeeb98dda5b87c0de3063b6dbb","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/dad0003ccc68457baf005a6ed75b4d321463fe3d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/015d79c96d62cd8a4a359fcf5be40d58088c936b","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-42133","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T16:16:19.014130Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:34:36.283Z"}}]}}