{"id":"CVE-2026-80562","summary":"gpio: ml-ioh: use raw_spinlock_t for the register lock","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: ml-ioh: use raw_spinlock_t for the register lock\n\nioh_irq_type() is registered as the irq_chip .irq_set_type callback and\ntakes chip-\u003espinlock with spin_lock_irqsave().  This callback is reached\nfrom __setup_irq() -\u003e __irq_set_trigger() -\u003e chip-\u003eirq_set_type() while\nthe caller holds desc-\u003elock, a raw_spinlock_t, with hardirqs disabled.\nThat context is not sleepable, but on PREEMPT_RT a regular spinlock_t is\nan rtmutex-backed sleeping lock, so acquiring it there is invalid.\nioh_irq_enable() and ioh_irq_disable() take the same lock from the\n.irq_enable/.irq_disable callbacks, which are likewise invoked with\ndesc-\u003elock held.\n\nConvert the register lock to raw_spinlock_t.  The same lock also\nserializes the GPIO direction/value callbacks and the suspend/resume\nregister save/restore, and those critical sections only perform short\nsequences of MMIO register accesses (ioread32()/iowrite32()); the\n.irq_set_type callback additionally emits a dev_warn() on an unsupported\ntype.  None of these are sleepable operations, so keeping this register\nlock non-sleeping is appropriate for the irqchip callbacks and does not\nchange the GPIO-side locking contract.\n\nThis is the same fix as commit a02b8950d619 (\"gpio: pch: use\nraw_spinlock_t for the register lock\"); this driver shares the same\nstructure as gpio-pch.","modified":"2026-08-28T03:47:29.075949205Z","published":"2026-08-26T14:37:27.171Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80562.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0559b86611c35d342dd48542ea26a9e437046bf6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/359e6b1168c9a62a7bd214ace476aaa2d57eebe8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/431b10133113537660a6090a2856b0d74d1b06de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/600411ea1f2443fdf5b1af9b6480f616d7aff9d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84be002b40d30c56a91873b236e2d9001bbee363"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b6505a4cea45dd92eb753581b1ad9b524b5fcc34"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc7934d0acd4fc1c7e5b7c68debdb4a991121628"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80562.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80562"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"54be566317b6aece2389a95bb19ea209af9359be"},{"fixed":"431b10133113537660a6090a2856b0d74d1b06de"},{"fixed":"359e6b1168c9a62a7bd214ace476aaa2d57eebe8"},{"fixed":"63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c"},{"fixed":"b6505a4cea45dd92eb753581b1ad9b524b5fcc34"},{"fixed":"84be002b40d30c56a91873b236e2d9001bbee363"},{"fixed":"bc7934d0acd4fc1c7e5b7c68debdb4a991121628"},{"fixed":"0559b86611c35d342dd48542ea26a9e437046bf6"},{"fixed":"600411ea1f2443fdf5b1af9b6480f616d7aff9d0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80562.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"5.10.267"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.218"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.185"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.154"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.106"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.46"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80562.json"}}],"schema_version":"1.9.0"}