{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-50375", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50375", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-09-18T13:32:58.361Z", "updatedAt": "2026-05-11T19:18:20.373Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "tty: serial: fsl_lpuart: disable dma rx/tx use flags in lpuart_dma_shutdown", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "status": "affected", "versionType": "git", "lessThan": "29b897ac7b990882c74bd08605692214e7e58b83" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "status": "affected", "versionType": "git", "lessThan": "9a56ade124d4891a31ab1300c57665f07f5b24d5" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "status": "affected", "versionType": "git", "lessThan": "c4293def8860fd587a84400ccba5b49cec56e2c3" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "status": "affected", "versionType": "git", "lessThan": "d554c14eb73ee91d76fc9aece4616f0b687c295d" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "status": "affected", "versionType": "git", "lessThan": "3953e7f261e2f4d9c35f0c025df9f166f46aa626" }, { "version": "6250cc30c4c4e25393ba247f71bdc04b6af3191b", "status": "affected", "versionType": "git", "lessThan": "316ae95c175a7d770d1bfe4c011192712f57aa4a" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.9", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.9" }, { "version": "5.4.220", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.150", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.75", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.19.17", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.19.*" }, { "version": "6.0.3", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.0.*" }, { "version": "6.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }