{"api_version":"1","generated_at":"2026-08-15T08:44:18+00:00","cve":"CVE-2026-74403","urls":{"html":"https://cve.report/CVE-2026-74403","api":"https://cve.report/api/cve/CVE-2026-74403.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74403","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74403"},"summary":{"title":"crypto: ccp - Check for page allocation failure correctly in TIO","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:42","updated_at":"2026-08-15 06:22:42"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a8d5370eef00eca132a292b1901c9914c817e385","name":"https://git.kernel.org/stable/c/a8d5370eef00eca132a292b1901c9914c817e385","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69","name":"https://git.kernel.org/stable/c/17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74403","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74403","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4be423572da1f4c11f45168e3fafda870ddac9f8 17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4be423572da1f4c11f45168e3fafda870ddac9f8 a8d5370eef00eca132a292b1901c9914c817e385 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/crypto/ccp/sev-dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69","status":"affected","version":"4be423572da1f4c11f45168e3fafda870ddac9f8","versionType":"git"},{"lessThan":"a8d5370eef00eca132a292b1901c9914c817e385","status":"affected","version":"4be423572da1f4c11f45168e3fafda870ddac9f8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/crypto/ccp/sev-dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:59:13.399Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/17e1aae19a06d9f6da4b46d54fa2aeab77ec0c69"},{"url":"https://git.kernel.org/stable/c/a8d5370eef00eca132a292b1901c9914c817e385"}],"title":"crypto: ccp - Check for page allocation failure correctly in TIO","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74403","datePublished":"2026-08-15T05:59:13.399Z","dateReserved":"2026-08-15T05:44:03.892Z","dateUpdated":"2026-08-15T05:59:13.399Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:42","lastModifiedDate":"2026-08-15 06:22:42","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74403","Ordinal":"1","Title":"crypto: ccp - Check for page allocation failure correctly in TIO","CVE":"CVE-2026-74403","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74403","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"crypto: ccp - Check for page allocation failure correctly in TIO"}]}}}