{"id":"CVE-2022-49200","state":"PUBLISHED","title":"Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt\n\nFix the following kernel oops in btmtksdio_interrrupt\n\n[   14.339134]  btmtksdio_interrupt+0x28/0x54\n[   14.339139]  process_sdio_pending_irqs+0x68/0x1a0\n[   14.339144]  sdio_irq_work+0x40/0x70\n[   14.339154]  process_one_work+0x184/0x39c\n[   14.339160]  worker_thread+0x228/0x3e8\n[   14.339168]  kthread+0x148/0x3ac\n[   14.339176]  ret_from_fork+0x10/0x30\n\nThat happened because hdev->power_on is already called before\nsdio_set_drvdata which btmtksdio_interrupt handler relies on is not\nproperly set up.\n\nThe details are shown as the below: hci_register_dev would run\nqueue_work(hdev->req_workqueue, &hdev->power_on) as WQ_HIGHPRI\nworkqueue_struct to complete the power-on sequeunce and thus hci_power_on\nmay run before sdio_set_drvdata is done in btmtksdio_probe.\n\nThe hci_dev_do_open in hci_power_on would initialize the device and enable\nthe interrupt and thus it is possible that btmtksdio_interrupt is being\ncalled right before sdio_set_drvdata is filled out.\n\nWhen btmtksdio_interrupt is being called and sdio_set_drvdata is not filled\n, the kernel oops is going to happen because btmtksdio_interrupt access an\nuninitialized pointer.","publishedAt":"2025-02-26T01:55:42.758Z","updatedAt":"2026-05-11T18:55:04.839Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"874eca93966a786eace87fa6dfb206c2dd9519b1","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"70a6cf749d9ff9f463490248322e5343199bc267","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"770a97d3f34b801de1b04737b43e02c55118c41a","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"4d3d1f2c35a19988d3c5f0ee86038b525e830840","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"6d7be5afbb41c918d2f12f857f8c7efa50500be2","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"b062a0b9c1dc1ff63094337dccfe1568d5b62023","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btmtksdio.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.2","versionType":"semver"},{"version":"5.4.189","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.110","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.33","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.19","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.2","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btmtksdio.c"]}],"references":["https://git.kernel.org/stable/c/874eca93966a786eace87fa6dfb206c2dd9519b1","https://git.kernel.org/stable/c/70a6cf749d9ff9f463490248322e5343199bc267","https://git.kernel.org/stable/c/770a97d3f34b801de1b04737b43e02c55118c41a","https://git.kernel.org/stable/c/4d3d1f2c35a19988d3c5f0ee86038b525e830840","https://git.kernel.org/stable/c/6d7be5afbb41c918d2f12f857f8c7efa50500be2","https://git.kernel.org/stable/c/b062a0b9c1dc1ff63094337dccfe1568d5b62023"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49200.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49200","state":"PUBLISHED","datePublished":"2025-02-26T01:55:42.758Z","dateUpdated":"2026-05-11T18:55:04.839Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.291Z"},"containers":{"cna":{"title":"Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt\n\nFix the following kernel oops in btmtksdio_interrrupt\n\n[   14.339134]  btmtksdio_interrupt+0x28/0x54\n[   14.339139]  process_sdio_pending_irqs+0x68/0x1a0\n[   14.339144]  sdio_irq_work+0x40/0x70\n[   14.339154]  process_one_work+0x184/0x39c\n[   14.339160]  worker_thread+0x228/0x3e8\n[   14.339168]  kthread+0x148/0x3ac\n[   14.339176]  ret_from_fork+0x10/0x30\n\nThat happened because hdev->power_on is already called before\nsdio_set_drvdata which btmtksdio_interrupt handler relies on is not\nproperly set up.\n\nThe details are shown as the below: hci_register_dev would run\nqueue_work(hdev->req_workqueue, &hdev->power_on) as WQ_HIGHPRI\nworkqueue_struct to complete the power-on sequeunce and thus hci_power_on\nmay run before sdio_set_drvdata is done in btmtksdio_probe.\n\nThe hci_dev_do_open in hci_power_on would initialize the device and enable\nthe interrupt and thus it is possible that btmtksdio_interrupt is being\ncalled right before sdio_set_drvdata is filled out.\n\nWhen btmtksdio_interrupt is being called and sdio_set_drvdata is not filled\n, the kernel oops is going to happen because btmtksdio_interrupt access an\nuninitialized pointer."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"874eca93966a786eace87fa6dfb206c2dd9519b1","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"70a6cf749d9ff9f463490248322e5343199bc267","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"770a97d3f34b801de1b04737b43e02c55118c41a","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"4d3d1f2c35a19988d3c5f0ee86038b525e830840","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"6d7be5afbb41c918d2f12f857f8c7efa50500be2","versionType":"git"},{"version":"9aebfd4a2200ab8075e44379c758bccefdc589bb","status":"affected","lessThan":"b062a0b9c1dc1ff63094337dccfe1568d5b62023","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btmtksdio.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.2","versionType":"semver"},{"version":"5.4.189","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.110","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.33","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.19","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.2","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/bluetooth/btmtksdio.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/874eca93966a786eace87fa6dfb206c2dd9519b1"},{"url":"https://git.kernel.org/stable/c/70a6cf749d9ff9f463490248322e5343199bc267"},{"url":"https://git.kernel.org/stable/c/770a97d3f34b801de1b04737b43e02c55118c41a"},{"url":"https://git.kernel.org/stable/c/4d3d1f2c35a19988d3c5f0ee86038b525e830840"},{"url":"https://git.kernel.org/stable/c/6d7be5afbb41c918d2f12f857f8c7efa50500be2"},{"url":"https://git.kernel.org/stable/c/b062a0b9c1dc1ff63094337dccfe1568d5b62023"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:55:04.839Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.4.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.10.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.15.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}