{"id":"CVE-2026-43311","state":"PUBLISHED","title":"soc/tegra: pmc: Fix unsafe generic_handle_irq() call","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc/tegra: pmc: Fix unsafe generic_handle_irq() call\n\nCurrently, when resuming from system suspend on Tegra platforms,\nthe following warning is observed:\n\nWARNING: CPU: 0 PID: 14459 at kernel/irq/irqdesc.c:666\nCall trace:\n handle_irq_desc+0x20/0x58 (P)\n tegra186_pmc_wake_syscore_resume+0xe4/0x15c\n syscore_resume+0x3c/0xb8\n suspend_devices_and_enter+0x510/0x540\n pm_suspend+0x16c/0x1d8\n\nThe warning occurs because generic_handle_irq() is being called from\na non-interrupt context which is considered as unsafe.\n\nFix this warning by deferring generic_handle_irq() call to an IRQ work\nwhich gets executed in hard IRQ context where generic_handle_irq()\ncan be called safely.\n\nWhen PREEMPT_RT kernels are used, regular IRQ work (initialized with\ninit_irq_work) is deferred to run in per-CPU kthreads in preemptible\ncontext rather than hard IRQ context. Hence, use the IRQ_WORK_INIT_HARD\nvariant so that with PREEMPT_RT kernels, the IRQ work is processed in\nhardirq context instead of being deferred to a thread which is required\nfor calling generic_handle_irq().\n\nOn non-PREEMPT_RT kernels, both init_irq_work() and IRQ_WORK_INIT_HARD()\nexecute in IRQ context, so this change has no functional impact for\nstandard kernel configurations.\n\n[treding@nvidia.com: miscellaneous cleanups]","publishedAt":"2026-05-08T13:11:29.068Z","updatedAt":"2026-10-21T12:40:36.236Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"d1c9c79eb06ed7c4e0a090ba5b1d4e475f7d0681","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"5330afc068e90c538dd25aa8f82b3735bdb6d461","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"57a79c5df057deb7c1d0ebc066698c795092530f","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"64016227dcdb968b7030eda04304f3d0df5d209d","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"e6d96073af681780820c94079b978474a8a44413","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/pmc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/pmc.c"]}],"references":["https://git.kernel.org/stable/c/d1c9c79eb06ed7c4e0a090ba5b1d4e475f7d0681","https://git.kernel.org/stable/c/5330afc068e90c538dd25aa8f82b3735bdb6d461","https://git.kernel.org/stable/c/57a79c5df057deb7c1d0ebc066698c795092530f","https://git.kernel.org/stable/c/64016227dcdb968b7030eda04304f3d0df5d209d","https://git.kernel.org/stable/c/e6d96073af681780820c94079b978474a8a44413"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43311.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43311","state":"PUBLISHED","datePublished":"2026-05-08T13:11:29.068Z","dateUpdated":"2026-10-21T12:40:36.236Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.001Z"},"containers":{"cna":{"title":"soc/tegra: pmc: Fix unsafe generic_handle_irq() call","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc/tegra: pmc: Fix unsafe generic_handle_irq() call\n\nCurrently, when resuming from system suspend on Tegra platforms,\nthe following warning is observed:\n\nWARNING: CPU: 0 PID: 14459 at kernel/irq/irqdesc.c:666\nCall trace:\n handle_irq_desc+0x20/0x58 (P)\n tegra186_pmc_wake_syscore_resume+0xe4/0x15c\n syscore_resume+0x3c/0xb8\n suspend_devices_and_enter+0x510/0x540\n pm_suspend+0x16c/0x1d8\n\nThe warning occurs because generic_handle_irq() is being called from\na non-interrupt context which is considered as unsafe.\n\nFix this warning by deferring generic_handle_irq() call to an IRQ work\nwhich gets executed in hard IRQ context where generic_handle_irq()\ncan be called safely.\n\nWhen PREEMPT_RT kernels are used, regular IRQ work (initialized with\ninit_irq_work) is deferred to run in per-CPU kthreads in preemptible\ncontext rather than hard IRQ context. Hence, use the IRQ_WORK_INIT_HARD\nvariant so that with PREEMPT_RT kernels, the IRQ work is processed in\nhardirq context instead of being deferred to a thread which is required\nfor calling generic_handle_irq().\n\nOn non-PREEMPT_RT kernels, both init_irq_work() and IRQ_WORK_INIT_HARD()\nexecute in IRQ context, so this change has no functional impact for\nstandard kernel configurations.\n\n[treding@nvidia.com: miscellaneous cleanups]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"d1c9c79eb06ed7c4e0a090ba5b1d4e475f7d0681","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"5330afc068e90c538dd25aa8f82b3735bdb6d461","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"57a79c5df057deb7c1d0ebc066698c795092530f","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"64016227dcdb968b7030eda04304f3d0df5d209d","versionType":"git"},{"version":"0474cc8489bda9a8cd6a10252e7e6af29c849438","status":"affected","lessThan":"e6d96073af681780820c94079b978474a8a44413","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/pmc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/tegra/pmc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d1c9c79eb06ed7c4e0a090ba5b1d4e475f7d0681"},{"url":"https://git.kernel.org/stable/c/5330afc068e90c538dd25aa8f82b3735bdb6d461"},{"url":"https://git.kernel.org/stable/c/57a79c5df057deb7c1d0ebc066698c795092530f"},{"url":"https://git.kernel.org/stable/c/64016227dcdb968b7030eda04304f3d0df5d209d"},{"url":"https://git.kernel.org/stable/c/e6d96073af681780820c94079b978474a8a44413"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:40:36.236Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}