{"id":"CVE-2026-74403","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74403","summary":"crypto: ccp - Check for page allocation failure correctly in TIO","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Check for page allocation failure correctly in TIO\n\nSashiko notes:\n\n> if __snp_alloc_firmware_pages() returns NULL under memory pressure, is it\n> safe to pass it directly to page_address()?\n>\n> On architectures without HASHED_PAGE_VIRTUAL, page_address(NULL) might\n> compute a deterministic but invalid, non-zero virtual address. The\n> subsequent if (tio_status) check would then evaluate to true, and\n> sev_tsm_init_locked() would dereference the invalid pointer.\n\nIndeed, page_address(NULL) will return non-NULL garbage here. Fix this by\nchecking the page allocation itself for NULL, not the resulting virtual\naddress.","published":"2026-08-15T05:59:13.399Z","modified":"2026-08-18T03:56:57.588827707Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.1.5"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a8d5370eef00eca132a292b1901c9914c817e385"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74403.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74403"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:57.588827707Z"}}