{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50375", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:06.996Z", "datePublished": "2025-09-18T13:32:58.361Z", "dateUpdated": "2026-05-11T19:18:20.373Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:18:20.373Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: fsl_lpuart: disable dma rx/tx use flags in lpuart_dma_shutdown\n\nlpuart_dma_shutdown tears down lpuart dma, but lpuart_flush_buffer can\nstill occur which in turn tries to access dma apis if lpuart_dma_tx_use\nflag is true. At this point since dma is torn down, these dma apis can\nabort. Set lpuart_dma_tx_use and the corresponding rx flag\nlpuart_dma_rx_use to false in lpuart_dma_shutdown so that dmas are not\naccessed after they are relinquished.\n\nOtherwise, when try to kill btattach, kernel may panic. This patch may\nfix this issue.\nroot@imx8ulpevk:~# btattach -B /dev/ttyLP2 -S 115200\n^C[ 90.182296] Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP\n[ 90.189806] Modules linked in: moal(O) mlan(O)\n[ 90.194258] CPU: 0 PID: 503 Comm: btattach Tainted: G O 5.15.32-06136-g34eecdf2f9e4 #37\n[ 90.203554] Hardware name: NXP i.MX8ULP 9X9 EVK (DT)\n[ 90.208513] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 90.215470] pc : fsl_edma3_disable_request+0x8/0x60\n[ 90.220358] lr : fsl_edma3_terminate_all+0x34/0x20c\n[ 90.225237] sp : ffff800013f0bac0\n[ 90.228548] x29: ffff800013f0bac0 x28: 0000000000000001 x27: ffff000008404800\n[ 90.235681] x26: ffff000008404960 x25: ffff000008404a08 x24: ffff000008404a00\n[ 90.242813] x23: ffff000008404a60 x22: 0000000000000002 x21: 0000000000000000\n[ 90.249946] x20: ffff800013f0baf8 x19: ffff00000559c800 x18: 0000000000000000\n[ 90.257078] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n[ 90.264211] x14: 0000000000000003 x13: 0000000000000000 x12: 0000000000000040\n[ 90.271344] x11: ffff00000600c248 x10: ffff800013f0bb10 x9 : ffff000057bcb090\n[ 90.278477] x8 : fffffc0000241a08 x7 : ffff00000534ee00 x6 : ffff000008404804\n[ 90.285609] x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff0000055b3480\n[ 90.292742] x2 : ffff8000135c0000 x1 : ffff00000534ee00 x0 : ffff00000559c800\n[ 90.299876] Call trace:\n[ 90.302321] fsl_edma3_disable_request+0x8/0x60\n[ 90.306851] lpuart_flush_buffer+0x40/0x160\n[ 90.311037] uart_flush_buffer+0x88/0x120\n[ 90.315050] tty_driver_flush_buffer+0x20/0x30\n[ 90.319496] hci_uart_flush+0x44/0x90\n[ 90.323162] +0x34/0x12c\n[ 90.327253] tty_ldisc_close+0x38/0x70\n[ 90.331005] tty_ldisc_release+0xa8/0x190\n[ 90.335018] tty_release_struct+0x24/0x8c\n[ 90.339022] tty_release+0x3ec/0x4c0\n[ 90.342593] __fput+0x70/0x234\n[ 90.345652] ____fput+0x14/0x20\n[ 90.348790] task_work_run+0x84/0x17c\n[ 90.352455] do_exit+0x310/0x96c\n[ 90.355688] do_group_exit+0x3c/0xa0\n[ 90.359259] __arm64_sys_exit_group+0x1c/0x20\n[ 90.363609] invoke_syscall+0x48/0x114\n[ 90.367362] el0_svc_common.constprop.0+0xd4/0xfc\n[ 90.372068] do_el0_svc+0x2c/0x94\n[ 90.375379] el0_svc+0x28/0x80\n[ 90.378438] el0t_64_sync_handler+0xa8/0x130\n[ 90.382711] el0t_64_sync+0x1a0/0x1a4\n[ 90.386376] Code: 17ffffda d503201f d503233f f9409802 (b9400041)\n[ 90.392467] ---[ end trace 2f60524b4a43f1f6 ]---\n[ 90.397073] note: btattach[503] exited with preempt_count 1\n[ 90.402636] Fixing recursive fault but reboot is needed!" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/tty/serial/fsl_lpuart.c" ], "versions": [ { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "lessThan": "29b897ac7b990882c74bd08605692214e7e58b83", "status": "affected", "versionType": "git" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "lessThan": "9a56ade124d4891a31ab1300c57665f07f5b24d5", "status": "affected", "versionType": "git" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "lessThan": "c4293def8860fd587a84400ccba5b49cec56e2c3", "status": "affected", "versionType": "git" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "lessThan": "d554c14eb73ee91d76fc9aece4616f0b687c295d", "status": "affected", "versionType": "git" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "lessThan": "3953e7f261e2f4d9c35f0c025df9f166f46aa626", "status": "affected", "versionType": "git" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "lessThan": "316ae95c175a7d770d1bfe4c011192712f57aa4a", "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/tty/serial/fsl_lpuart.c" ], "versions": [ { "version": "4.9", "status": "affected" }, { "version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.220", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.150", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.75", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19.17", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.3", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "4.9", "versionEndExcluding": "5.4.220" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.10.150" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.15.75" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.19.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.0.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/29b897ac7b990882c74bd08605692214e7e58b83" }, { "url": "https://git.kernel.org/stable/c/9a56ade124d4891a31ab1300c57665f07f5b24d5" }, { "url": "https://git.kernel.org/stable/c/c4293def8860fd587a84400ccba5b49cec56e2c3" }, { "url": "https://git.kernel.org/stable/c/d554c14eb73ee91d76fc9aece4616f0b687c295d" }, { "url": "https://git.kernel.org/stable/c/3953e7f261e2f4d9c35f0c025df9f166f46aa626" }, { "url": "https://git.kernel.org/stable/c/316ae95c175a7d770d1bfe4c011192712f57aa4a" } ], "title": "tty: serial: fsl_lpuart: disable dma rx/tx use flags in lpuart_dma_shutdown", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-50375", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:46:25.103854Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:53:02.884Z" } } ] } }