CVE-2026-74403: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 4be423572da1f4c11f45168e3fafda870ddac9f8 преди 17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69; 4be423572da1f4c11f45168e3fafda870ddac9f8 преди a8d5370eef00eca132a292b1901c9914c817e385
• Linux Linux: 6.19; преди 6.19; 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-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-74403
• https://nvd.nist.gov/vuln/detail/CVE-2026-74403
• https://git.kernel.org/stable/c/17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69
• https://git.kernel.org/stable/c/a8d5370eef00eca132a292b1901c9914c817e385