CVE-2026-74420: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges VMAs marked with VM_IO or VM_PFNMAP are not backed by struct page objects, which GPUSVM requires in order to operate correctly. In particular, get_pages() relies on hmm_range_fault() to resolve struct pages for the target range. Attempting to create an SVM range on such VMAs results in repeated get_pages() failures and can lead to an infinite loop inside a driver’s page‑fault handler. Prevent this by rejecting ranges on VM_IO or VM_PFNMAP VMAs and returning -EIO.

Засегнати продукти

• Linux Linux: 99624bdff8670795b678eafa6509aaad3a5c0175 преди 353f26c74660bcbd8d82cd76622748e14a5a5db3; 99624bdff8670795b678eafa6509aaad3a5c0175 преди 63f443384979563f16f70420f4fa85bba31238ca; 99624bdff8670795b678eafa6509aaad3a5c0175 преди b82a225e57a334335a21462b75ee2223bc6efe6d
• Linux Linux: 6.15; преди 6.15; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-74420
• https://nvd.nist.gov/vuln/detail/CVE-2026-74420
• https://git.kernel.org/stable/c/353f26c74660bcbd8d82cd76622748e14a5a5db3
• https://git.kernel.org/stable/c/63f443384979563f16f70420f4fa85bba31238ca
• https://git.kernel.org/stable/c/b82a225e57a334335a21462b75ee2223bc6efe6d