{"id":"CVE-2026-64304","revision":"f8b20e57afd1478c9af179059edf29ce","records":[{"revision":"f8b20e57afd1478c9af179059edf29ce","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64304","aliases":[],"title":"crypto: qat - validate RSA CRT component lengths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - validate RSA CRT component lengths\n\nThe generic RSA key parser (rsa_helper.c) bounds each CRT component (p,\nq, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt()\nallocates half-size DMA buffers (key_sz / 2) and right-aligns each\ncomponent with:\n\n    memcpy(dst + half_key_sz - len, src, len)\n\nWhen a CRT component is larger than half_key_sz the subtraction\nunderflows and memcpy writes past the DMA buffer, causing memory\ncorruption.\n\nAdd a len > half_key_sz check next to the existing !len check for each\nof the five CRT components so the driver falls back to the non-CRT path\ninstead of writing out of bounds.","state":0,"publishedAt":"2026-07-25T08:49:38.873+00:00","modifiedAt":"2026-10-19T20:38:22.981+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/crypto/intel/qat/qat_common/qat_asym_algs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"6d99c5fadd2df488103f64d6475b63ba6852202b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"c34369473bfe92a0b46ec78d6358e30341c7f481\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"1002719d13072a5e4be1e993aa61dffb4a604e82\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"500319830d76911c120dc0b9605f8c16d7702844\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"3d61a214fdcda41f1ebfabbb483404032a7b4d91\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"ce42224487c504aee4b7ff3a7342e7b4d7e28cc9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"879f77e9071f029e1c9bd5a75814ecf51370f846\",\n                            \"lessThan\": \"b3ac78756588059729b9195fcc9f4b37d54057a5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/crypto/intel/qat/qat_common/qat_asym_algs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.261\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.96\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.39\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.4\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b","https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481","https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82","https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844","https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91","https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a","https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9","https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64304","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64304","identifiers":["CVE-2026-64304"]},"retained":false,"historicalAffected":[]}],"coverage":[]}