{"id":"CVE-2026-74420","summary":"drm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges\n\nVMAs marked with VM_IO or VM_PFNMAP are not backed by struct page\nobjects, which GPUSVM requires in order to operate correctly. In\nparticular, get_pages() relies on hmm_range_fault() to resolve struct\npages for the target range.\n\nAttempting to create an SVM range on such VMAs results in repeated\nget_pages() failures and can lead to an infinite loop inside a driver’s\npage‑fault handler. Prevent this by rejecting ranges on VM_IO or\nVM_PFNMAP VMAs and returning -EIO.","modified":"2026-08-16T03:48:35.246164094Z","published":"2026-08-15T05:59:24.704Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74420.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/353f26c74660bcbd8d82cd76622748e14a5a5db3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/63f443384979563f16f70420f4fa85bba31238ca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b82a225e57a334335a21462b75ee2223bc6efe6d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74420.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74420"},{"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":"99624bdff8670795b678eafa6509aaad3a5c0175"},{"fixed":"353f26c74660bcbd8d82cd76622748e14a5a5db3"},{"fixed":"63f443384979563f16f70420f4fa85bba31238ca"},{"fixed":"b82a225e57a334335a21462b75ee2223bc6efe6d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74420.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74420.json"}}],"schema_version":"1.9.0"}