{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38040", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.978Z", "datePublished": "2025-06-18T09:33:25.720Z", "dateUpdated": "2026-05-11T21:20:07.627Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:20:07.627Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: mctrl_gpio: split disable_ms into sync and no_sync APIs\n\nThe following splat has been observed on a SAMA5D27 platform using\natmel_serial:\n\nBUG: sleeping function called from invalid context at kernel/irq/manage.c:738\nin_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 27, name: kworker/u5:0\npreempt_count: 1, expected: 0\nINFO: lockdep is turned off.\nirq event stamp: 0\nhardirqs last enabled at (0): [<00000000>] 0x0\nhardirqs last disabled at (0): [] copy_process+0x1c4c/0x7bec\nsoftirqs last enabled at (0): [] copy_process+0x1ca0/0x7bec\nsoftirqs last disabled at (0): [<00000000>] 0x0\nCPU: 0 UID: 0 PID: 27 Comm: kworker/u5:0 Not tainted 6.13.0-rc7+ #74\nHardware name: Atmel SAMA5\nWorkqueue: hci0 hci_power_on [bluetooth]\nCall trace:\n unwind_backtrace from show_stack+0x18/0x1c\n show_stack from dump_stack_lvl+0x44/0x70\n dump_stack_lvl from __might_resched+0x38c/0x598\n __might_resched from disable_irq+0x1c/0x48\n disable_irq from mctrl_gpio_disable_ms+0x74/0xc0\n mctrl_gpio_disable_ms from atmel_disable_ms.part.0+0x80/0x1f4\n atmel_disable_ms.part.0 from atmel_set_termios+0x764/0x11e8\n atmel_set_termios from uart_change_line_settings+0x15c/0x994\n uart_change_line_settings from uart_set_termios+0x2b0/0x668\n uart_set_termios from tty_set_termios+0x600/0x8ec\n tty_set_termios from ttyport_set_flow_control+0x188/0x1e0\n ttyport_set_flow_control from wilc_setup+0xd0/0x524 [hci_wilc]\n wilc_setup [hci_wilc] from hci_dev_open_sync+0x330/0x203c [bluetooth]\n hci_dev_open_sync [bluetooth] from hci_dev_do_open+0x40/0xb0 [bluetooth]\n hci_dev_do_open [bluetooth] from hci_power_on+0x12c/0x664 [bluetooth]\n hci_power_on [bluetooth] from process_one_work+0x998/0x1a38\n process_one_work from worker_thread+0x6e0/0xfb4\n worker_thread from kthread+0x3d4/0x484\n kthread from ret_from_fork+0x14/0x28\n\nThis warning is emitted when trying to toggle, at the highest level,\nsome flow control (with serdev_device_set_flow_control) in a device\ndriver. At the lowest level, the atmel_serial driver is using\nserial_mctrl_gpio lib to enable/disable the corresponding IRQs\naccordingly. The warning emitted by CONFIG_DEBUG_ATOMIC_SLEEP is due to\ndisable_irq (called in mctrl_gpio_disable_ms) being possibly called in\nsome atomic context (some tty drivers perform modem lines configuration\nin regions protected by port lock).\n\nSplit mctrl_gpio_disable_ms into two differents APIs, a non-blocking one\nand a blocking one. Replace mctrl_gpio_disable_ms calls with the\nrelevant version depending on whether the call is protected by some port\nlock." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "Documentation/driver-api/serial/driver.rst", "drivers/tty/serial/8250/8250_port.c", "drivers/tty/serial/atmel_serial.c", "drivers/tty/serial/imx.c", "drivers/tty/serial/serial_mctrl_gpio.c", "drivers/tty/serial/serial_mctrl_gpio.h", "drivers/tty/serial/sh-sci.c", "drivers/tty/serial/stm32-usart.c" ], "versions": [ { "version": "ce59e48fdbad2aa6609ceb87e1306ec69e577e05", "lessThan": "68435c1fa3db696db4f480385db9e50e26691d0d", "status": "affected", "versionType": "git" }, { "version": "ce59e48fdbad2aa6609ceb87e1306ec69e577e05", "lessThan": "c504c11b94d6e4ad818ca5578dffa8ff29ad0f20", "status": "affected", "versionType": "git" }, { "version": "ce59e48fdbad2aa6609ceb87e1306ec69e577e05", "lessThan": "e6a46719a2369eb5186d4f7e6c0478720ca1ec3d", "status": "affected", "versionType": "git" }, { "version": "ce59e48fdbad2aa6609ceb87e1306ec69e577e05", "lessThan": "7187ec6b0b9ff22ebac2c3bb4178b7dbbdc0a55a", "status": "affected", "versionType": "git" }, { "version": "ce59e48fdbad2aa6609ceb87e1306ec69e577e05", "lessThan": "1bd2aad57da95f7f2d2bb52f7ad15c0f4993a685", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "Documentation/driver-api/serial/driver.rst", "drivers/tty/serial/8250/8250_port.c", "drivers/tty/serial/atmel_serial.c", "drivers/tty/serial/imx.c", "drivers/tty/serial/serial_mctrl_gpio.c", "drivers/tty/serial/serial_mctrl_gpio.h", "drivers/tty/serial/sh-sci.c", "drivers/tty/serial/stm32-usart.c" ], "versions": [ { "version": "4.4", "status": "affected" }, { "version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.141", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.93", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.31", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14.9", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15", "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": "4.4", "versionEndExcluding": "6.1.141" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.6.93" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.12.31" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.14.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/68435c1fa3db696db4f480385db9e50e26691d0d" }, { "url": "https://git.kernel.org/stable/c/c504c11b94d6e4ad818ca5578dffa8ff29ad0f20" }, { "url": "https://git.kernel.org/stable/c/e6a46719a2369eb5186d4f7e6c0478720ca1ec3d" }, { "url": "https://git.kernel.org/stable/c/7187ec6b0b9ff22ebac2c3bb4178b7dbbdc0a55a" }, { "url": "https://git.kernel.org/stable/c/1bd2aad57da95f7f2d2bb52f7ad15c0f4993a685" } ], "title": "serial: mctrl_gpio: split disable_ms into sync and no_sync APIs", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:33:17.475Z" } } ] } }