CVE-2026-74403
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel, __snp_alloc_firmware_pages() lacks proper error checking for page allocation, which can lead to dereferencing an invalid pointer. An attacker could exploit this to crash the system.
Risk Assessment
Risk of kernel panic under memory pressure.
Recommendation
Install a kernel patch that checks the page allocation result, not the virtual address.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Check for page allocation failure correctly in TIO Sashiko notes: > if __snp_alloc_firmware_pages() returns NULL under memory pressure, is it > safe to pass it directly to page_address()? > > On architectures without HASHED_PAGE_VIRTUAL, page_address(NULL) might > compute a deterministic but invalid, non-zero virtual address. The > subsequent if (tio_status) check would then evaluate to true, and > sev_tsm_init_locked() would dereference the invalid pointer. Indeed, page_address(NULL) will return non-NULL garbage here. Fix this by checking the page allocation itself for NULL, not the resulting virtual address.