CVE-2026-74403

High

Description

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.

SeverityHigh
CVSS7.8
Exploit probability—
ProductLinux
PublishedAug 15, 2026
First seenAug 15, 2026

How to fix

Update
  • Linux Linux17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69, a8d5370eef00eca132a292b1901c9914c817e385 or later

Affected products

ProductAffected versionsFixed in
Linux Linux4be423572da1f4c11f45168e3fafda870ddac9f8 ≤ v < 17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69, 4be423572da1f4c11f45168e3fafda870ddac9f8 ≤ v < a8d5370eef00eca132a292b1901c9914c817e385, 6.1917e1aae19a06d9f6da4b46d54fa2aeab77ec0c69, a8d5370eef00eca132a292b1901c9914c817e385

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CVE-2026-74403 · Linux · Dark Radar