{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-58238","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:19:43.804Z","datePublished":"2025-08-09T14:31:47.079Z","dateUpdated":"2026-05-11T21:03:20.316Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:03:20.316Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btnxpuart: Resolve TX timeout error in power save stress test\n\nThis fixes the tx timeout issue seen while running a stress test on\nbtnxpuart for couple of hours, such that the interval between two HCI\ncommands coincide with the power save timeout value of 2 seconds.\n\nTest procedure using bash script:\n<load btnxpuart.ko>\nhciconfig hci0 up\n//Enable Power Save feature\nhcitool -i hci0 cmd 3f 23 02 00 00\nwhile (true)\ndo\n    hciconfig hci0 leadv\n    sleep 2\n    hciconfig hci0 noleadv\n    sleep 2\ndone\n\nError log, after adding few more debug prints:\nBluetooth: btnxpuart_queue_skb(): 01 0A 20 01 00\nBluetooth: hci0: Set UART break: on, status=0\nBluetooth: hci0: btnxpuart_tx_wakeup() tx_work scheduled\nBluetooth: hci0: btnxpuart_tx_work() dequeue: 01 0A 20 01 00\nCan't set advertise mode on hci0: Connection timed out (110)\nBluetooth: hci0: command 0x200a tx timeout\n\nWhen the power save mechanism turns on UART break, and btnxpuart_tx_work()\nis scheduled simultaneously, psdata->ps_state is read as PS_STATE_AWAKE,\nwhich prevents the psdata->work from being scheduled, which is responsible\nto turn OFF UART break.\n\nThis issue is fixed by adding a ps_lock mutex around UART break on/off as\nwell as around ps_state read/write.\nbtnxpuart_tx_wakeup() will now read updated ps_state value. If ps_state is\nPS_STATE_SLEEP, it will first schedule psdata->work, and then it will\nreschedule itself once UART break has been turned off and ps_state is\nPS_STATE_AWAKE.\n\nTested above script for 50,000 iterations and TX timeout error was not\nobserved anymore."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btnxpuart.c"],"versions":[{"version":"689ca16e523278470c38832a3010645a78c544d8","lessThan":"9d5df94ce0e213d5b549633f528f96114c736190","status":"affected","versionType":"git"},{"version":"689ca16e523278470c38832a3010645a78c544d8","lessThan":"e4db90e4eb8d5487098712ffb1048f3fa6d25e98","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btnxpuart.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.49","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9","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":"6.4","versionEndExcluding":"6.6.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9d5df94ce0e213d5b549633f528f96114c736190"},{"url":"https://git.kernel.org/stable/c/e4db90e4eb8d5487098712ffb1048f3fa6d25e98"}],"title":"Bluetooth: btnxpuart: Resolve TX timeout error in power save stress test","x_generator":{"engine":"bippy-1.2.0"}}}}