{"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": "2026-08-05T12:40:48.333Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:40:48.333Z"}, "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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - An unprivileged local process can add a crafted PKCS#8 RSA private key to its own keyring and invoke KEYCTL_PKEY_QUERY, which selects qat-rsa and reaches the vulnerable key setup path.\nAC:L - With an active QAT asymmetric service and PKCS#8 parser, an oversized CRT integer deterministically causes unsigned offset underflow and an out-of-bounds memcpy. No race or attacker-uncontrollable condition is required.\nPR:L - An ordinary user can create, search, and use keys in a personal process, thread, or session keyring. No capability, administrator privilege, or user namespace is required.\nUI:N - The attacker directly performs the add_key and keyctl system calls without any victim action.\nS:U - The vulnerable QAT driver and the corrupted kernel resources share the same security authority. Ordinary kernel privilege escalation does not cross a CVSS scope boundary.\nC:H - The controlled kernel-memory overwrite can corrupt page tables, credentials, or control-flow objects and plausibly yield code execution with access to protected kernel memory.\nI:H - Attacker-controlled CRT bytes are written outside the coherent DMA allocation, potentially through multiple CRT components. This can provide powerful kernel-memory corruption and control-flow hijacking primitives.\nA:H - The invalid destination can cause an immediate kernel fault or corrupt unrelated kernel memory and subsequently panic or hang the system. The attack is repeatable."}]}], "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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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/crypto/intel/qat/qat_common/qat_asym_algs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6d99c5fadd2df488103f64d6475b63ba6852202b", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "c34369473bfe92a0b46ec78d6358e30341c7f481", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "1002719d13072a5e4be1e993aa61dffb4a604e82", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "500319830d76911c120dc0b9605f8c16d7702844", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "3d61a214fdcda41f1ebfabbb483404032a7b4d91", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "ce42224487c504aee4b7ff3a7342e7b4d7e28cc9", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}, {"lessThan": "b3ac78756588059729b9195fcc9f4b37d54057a5", "status": "affected", "version": "879f77e9071f029e1c9bd5a75814ecf51370f846", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/crypto/intel/qat/qat_common/qat_asym_algs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"lessThan": "4.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.96", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-64304", "lastModified": "2026-08-11T15:00:57.447", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-07-25T10:17:11.403", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: crypto: qat - validate RSA CRT component lengths", "id": "2507119", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507119"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's QAT (QuickAssist Technology) crypto module. This vulnerability occurs in the RSA key parser when handling CRT (Chinese Remainder Theorem) components. An underflow can happen during a memory copy operation if an RSA CRT component is larger than its allocated buffer, leading to memory corruption. This could potentially allow an attacker to cause system instability or execute arbitrary code."], "name": "CVE-2026-64304", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64304\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64304\nhttps://lore.kernel.org/linux-cve-announce/2026072507-CVE-2026-64304-7d9a@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,6d99c5fadd2df488103f64d6475b63ba6852202b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,c34369473bfe92a0b46ec78d6358e30341c7f481)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,1002719d13072a5e4be1e993aa61dffb4a604e82)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,500319830d76911c120dc0b9605f8c16d7702844)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,3d61a214fdcda41f1ebfabbb483404032a7b4d91)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,ce42224487c504aee4b7ff3a7342e7b4d7e28cc9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[879f77e9071f029e1c9bd5a75814ecf51370f846,b3ac78756588059729b9195fcc9f4b37d54057a5)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T12:15:04.527549+00:00", "updated": "2026-08-02T13:30:17.748099+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}