{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49564","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T02:21:30.410Z","datePublished":"2025-02-26T02:23:10.733Z","dateUpdated":"2026-08-05T08:55:49.056Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:55:49.056Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - add param check for DH\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 DH KPP implementation is reached through the local kernel crypto API (e.g. KEYCTL_DH_COMPUTE selecting \"dh\"/qat-dh). It is not reachable via network packet processing in the affected version range (NVMe DHCHAP landed after the fix).\nAC:L - The overflow is deterministic once a compute_shared_secret request is issued with src_len greater than p_size; the attacker fully controls both the length and the contents written past the heap buffer.\nPR:L - The \"dh\" algorithm is exposed to unprivileged local users through the kernel keyring DH interface and the crypto API, and QAT registers qat-dh at priority 1000 so it is preferred when the hardware is present.\nUI:N - Exploitation requires only local syscalls to set up DH parameters and invoke the KPP operation; no victim action 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 DH request path can be used to corrupt adjacent kernel objects and achieve 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":"c9839143ebbf5e821128da44f7e271d745aab19e","lessThan":"e7f979ed51f96495328157df663c835b17db1e30","status":"affected","versionType":"git"},{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","lessThan":"76c9216833e7c20a67c987cf89719a3f01666aaa","status":"affected","versionType":"git"},{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","lessThan":"2acbb8771f6ac82422886e63832ee7a0f4b1635b","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":"4.8","status":"affected"},{"version":"0","lessThan":"4.8","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":"4.8","versionEndExcluding":"5.15.58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.18.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e7f979ed51f96495328157df663c835b17db1e30"},{"url":"https://git.kernel.org/stable/c/76c9216833e7c20a67c987cf89719a3f01666aaa"},{"url":"https://git.kernel.org/stable/c/2acbb8771f6ac82422886e63832ee7a0f4b1635b"}],"title":"crypto: qat - add param check for DH","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-2022-49564","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:37:06.730762Z"}}}],"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":"2025-10-01T19:46:38.501Z"}}]}}