{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49563", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.591Z", "datePublished": "2025-02-26T02:23:10.252Z", "dateUpdated": "2026-08-05T08:55:47.255Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:55:47.255Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - add param check for RSA\n\nReject requests with a source buffer that is bigger than the size of the\nkey. This is to prevent a possible integer underflow that might happen\nwhen copying the source scatterlist into a linear buffer." } ], "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 - The vulnerable qat-rsa encrypt/decrypt paths are reached through the local kernel crypto API (KEYCTL_PKEY_ENCRYPT/DECRYPT selecting \"rsa\"/qat-rsa). This is not reachable via network packet processing.\nAC:L - The underflow is deterministic once an RSA request is issued with src_len greater than key_sz; the attacker controls both the length and the contents written out of bounds via scatterwalk_map_and_copy.\nPR:L - Unprivileged local users can create asymmetric keys and invoke KEYCTL_PKEY_* operations; when Intel QAT is present, qat-rsa registers as \"rsa\" at priority 1000 and is preferred over software RSA.\nUI:N - Exploitation requires only local syscalls to load an RSA key and submit an encrypt/decrypt request; no victim interaction is needed.\nS:U - This is standard kernel heap memory corruption within the same privilege boundary, not a VM/IOMMU escape or other cross-authority impact.\nC:H - The integer underflow produces a heap out-of-bounds write of attacker-controlled length and content, which can be leveraged for arbitrary kernel memory read primitives.\nI:H - Attacker-controlled heap overflow in the QAT RSA request path can corrupt adjacent kernel objects and enable arbitrary write or control-flow hijacking.\nA:H - The same heap corruption can reliably cause kernel oops/panic or otherwise deny service even without a full privilege-escalation exploit." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/crypto/qat/qat_common/qat_asym_algs.c" ], "versions": [ { "version": "a990532023b903b10cf14736241cdd138e4bc92c", "lessThan": "4d6d2adce08788b7667a6e58002682ea1bbf6a79", "status": "affected", "versionType": "git" }, { "version": "a990532023b903b10cf14736241cdd138e4bc92c", "lessThan": "f993321e50ba7a8ba4f5b19939e1772a921a1c42", "status": "affected", "versionType": "git" }, { "version": "a990532023b903b10cf14736241cdd138e4bc92c", "lessThan": "9714061423b8b24b8afb31b8eb4df977c63f19c4", "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/qat/qat_common/qat_asym_algs.c" ], "versions": [ { "version": "4.3", "status": "affected" }, { "version": "0", "lessThan": "4.3", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.58", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.15", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "4.3", "versionEndExcluding": "5.15.58" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "5.18.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4d6d2adce08788b7667a6e58002682ea1bbf6a79" }, { "url": "https://git.kernel.org/stable/c/f993321e50ba7a8ba4f5b19939e1772a921a1c42" }, { "url": "https://git.kernel.org/stable/c/9714061423b8b24b8afb31b8eb4df977c63f19c4" } ], "title": "crypto: qat - add param check for RSA", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49563", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:37:10.210375Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-191", "description": "CWE-191 Integer Underflow (Wrap or Wraparound)" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:46:38.670Z" } } ] } }