{"id":"CVE-2024-27437","summary":"vfio/pci: Disable auto-enable of exclusive INTx IRQ","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Disable auto-enable of exclusive INTx IRQ\n\nCurrently for devices requiring masking at the irqchip for INTx, ie.\ndevices without DisINTx support, the IRQ is enabled in request_irq()\nand subsequently disabled as necessary to align with the masked status\nflag.  This presents a window where the interrupt could fire between\nthese events, resulting in the IRQ incrementing the disable depth twice.\nThis would be unrecoverable for a user since the masked flag prevents\nnested enables through vfio.\n\nInstead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx\nis never auto-enabled, then unmask as required.","modified":"2026-04-02T10:07:58.179403Z","published":"2024-04-05T08:24:44.561Z","related":["SUSE-SU-2024:2892-1","SUSE-SU-2024:2894-1","SUSE-SU-2024:2901-1","SUSE-SU-2024:2939-1","SUSE-SU-2024:2940-1","SUSE-SU-2024:2947-1","SUSE-SU-2024:3194-1","SUSE-SU-2024:3195-1","SUSE-SU-2024:3383-1","SUSE-SU-2025:20044-1","SUSE-SU-2025:20047-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27437.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda"},{"type":"WEB","url":"https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27437.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-27437"},{"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":"89e1f7d4c66d85f42c3d52ea3866eb10cadf6153"},{"fixed":"26389925d6c2126fb777821a0a983adca7ee6351"},{"fixed":"561d5e1998d58b54ce2bbbb3e843b669aa0b3db5"},{"fixed":"b7a2f0955ffceffadfe098b40b50307431f45438"},{"fixed":"139dfcc4d723ab13469881200c7d80f49d776060"},{"fixed":"2a4a666c45107206605b7b5bc20545f8aabc4fa2"},{"fixed":"3b3491ad0f80d913e7d255941d4470f4a4d9bfda"},{"fixed":"bf0bc84a20e6109ab07d5dc072067bd01eb931ec"},{"fixed":"fe9a7082684eb059b925c535682e68c34d487d43"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27437.json"}}],"schema_version":"1.7.5"}