{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64304", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.779Z", "datePublished": "2026-07-25T08:49:38.873Z", "dateUpdated": "2026-07-25T08:49:38.873Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:49:38.873Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/intel/qat/qat_common/qat_asym_algs.c"], "versions": [{"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "6d99c5fadd2df488103f64d6475b63ba6852202b", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "c34369473bfe92a0b46ec78d6358e30341c7f481", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "1002719d13072a5e4be1e993aa61dffb4a604e82", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "500319830d76911c120dc0b9605f8c16d7702844", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "3d61a214fdcda41f1ebfabbb483404032a7b4d91", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "ce42224487c504aee4b7ff3a7342e7b4d7e28cc9", "status": "affected", "versionType": "git"}, {"version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "lessThan": "b3ac78756588059729b9195fcc9f4b37d54057a5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/intel/qat/qat_common/qat_asym_algs.c"], "versions": [{"version": "4.8", "status": "affected"}, {"version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b"}, {"url": "https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481"}, {"url": "https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82"}, {"url": "https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844"}, {"url": "https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91"}, {"url": "https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a"}, {"url": "https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9"}, {"url": "https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5"}], "title": "crypto: qat - validate RSA CRT component lengths", "x_generator": {"engine": "bippy-1.2.0"}}}}

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