{"id":"CVE-2022-49564","state":"PUBLISHED","title":"crypto: qat - add param check for DH","description":"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.","publishedAt":"2025-02-26T02:23:10.733Z","updatedAt":"2026-08-05T08:55:49.056Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","status":"affected","lessThan":"e7f979ed51f96495328157df663c835b17db1e30","versionType":"git"},{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","status":"affected","lessThan":"76c9216833e7c20a67c987cf89719a3f01666aaa","versionType":"git"},{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","status":"affected","lessThan":"2acbb8771f6ac82422886e63832ee7a0f4b1635b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qat/qat_common/qat_asym_algs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"5.15.58","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.15","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qat/qat_common/qat_asym_algs.c"]}],"references":["https://git.kernel.org/stable/c/e7f979ed51f96495328157df663c835b17db1e30","https://git.kernel.org/stable/c/76c9216833e7c20a67c987cf89719a3f01666aaa","https://git.kernel.org/stable/c/2acbb8771f6ac82422886e63832ee7a0f4b1635b"],"weaknesses":["CWE-191"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49564.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49564","state":"PUBLISHED","datePublished":"2025-02-26T02:23:10.733Z","dateUpdated":"2026-08-05T08:55:49.056Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.410Z"},"containers":{"cna":{"title":"crypto: qat - add param check for DH","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","status":"affected","lessThan":"e7f979ed51f96495328157df663c835b17db1e30","versionType":"git"},{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","status":"affected","lessThan":"76c9216833e7c20a67c987cf89719a3f01666aaa","versionType":"git"},{"version":"c9839143ebbf5e821128da44f7e271d745aab19e","status":"affected","lessThan":"2acbb8771f6ac82422886e63832ee7a0f4b1635b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qat/qat_common/qat_asym_algs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"5.15.58","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.15","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qat/qat_common/qat_asym_algs.c"]}],"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"}],"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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T08:55:49.056Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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":[{"cweId":"CWE-191","lang":"en","type":"CWE","description":"CWE-191 Integer Underflow (Wrap or Wraparound)"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:46:38.501Z"}}]}}}