{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71158","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:30:19.665Z","datePublished":"2026-01-23T15:23:57.016Z","dateUpdated":"2026-08-05T12:12:24.125Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T12:12:24.125Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: mpsse: ensure worker is torn down\n\nWhen an IRQ worker is running, unplugging the device would cause a\ncrash. The sealevel hardware this driver was written for was not\nhotpluggable, so I never realized it.\n\nThis change uses a spinlock to protect a list of workers, which\nit tears down on disconnect."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - A local caller with write access to the USB device node can issue USBDEVFS_IOCTL containing USBDEVFS_DISCONNECT, which synchronously reaches gpio_mpsse_disconnect(); physical unplugging is an additional path.\nAC:L - The attacker can arm edge detection through GPIO_V2_GET_LINE_IOCTL and then initiate software disconnect, controlling both sides of the race. The continuously running polling worker makes repeated triggering practical.\nPR:L - Neither the GPIO request nor USBFS disconnect path performs a capable() or ns_capable() check; access is governed only by device-node DAC/LSM policy, so a basic user granted device access suffices.\nUI:N - No victim action is required after the attacker arms the worker and disconnects the interface, and deployed controller services may already keep GPIO edge IRQs continuously active.\nS:U - The vulnerable worker and affected resources are within the same host-kernel security authority, with no VM, IOMMU, or other security-boundary crossing.\nC:H - The worker can continue dereferencing a devm-freed mpsse_priv containing kernel pointers and synchronization objects, allowing attacker-influenced reclaimed contents to support kernel-memory disclosure.\nI:H - The use-after-free performs operations through reclaimed pointers and mutexes, while the reclaimed gpio.ngpio value controls loops over fixed 16-entry stack arrays, making arbitrary corruption and control-flow hijacking defensible.\nA:H - The documented outcome is a kernel crash on disconnect, reachable through immediate NULL dereferences or subsequent use-after-free accesses by the unterminated worker."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpio-mpsse.c"],"versions":[{"version":"c46a74ff05c0ac76ba11ef21c930c3b447abf31a","lessThan":"472d900c8bcac301ae0e40fdca7db799bd989ff5","status":"affected","versionType":"git"},{"version":"c46a74ff05c0ac76ba11ef21c930c3b447abf31a","lessThan":"179ef1127d7a4f09f0e741fa9f30b8a8e7886271","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/gpio/gpio-mpsse.c"],"versions":[{"version":"6.13","status":"affected"},{"version":"0","lessThan":"6.13","status":"unaffected","versionType":"semver"},{"version":"6.18.6","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","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":"6.13","versionEndExcluding":"6.18.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/472d900c8bcac301ae0e40fdca7db799bd989ff5"},{"url":"https://git.kernel.org/stable/c/179ef1127d7a4f09f0e741fa9f30b8a8e7886271"}],"title":"gpio: mpsse: ensure worker is torn down","x_generator":{"engine":"bippy-1.2.0"}}}}