{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43622", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-05-01T18:22:45.640Z", "datePublished": "2026-08-06T15:27:07.820Z", "dateUpdated": "2026-08-06T15:27:07.820Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-06T15:27:07.820Z"}, "title": "llama.cpp b1886\u2013b7445 Double Free via llama-android.cpp", "datePublic": "2026-05-06T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-762", "description": "CWE-762 Mismatched Memory Management Routines", "type": "CWE"}, {"lang": "en", "cweId": "CWE-415", "description": "CWE-415 Double Free", "type": "CWE"}]}], "affected": [{"vendor": "ggml-org", "product": "llama.cpp", "versions": [{"status": "affected", "version": "b1886", "lessThanOrEqual": "b7445", "versionType": "custom"}, {"status": "affected", "version": "0.9.0", "lessThanOrEqual": "0.17.1", "versionType": "semver"}, {"status": "unaffected", "version": "5c0d18881e0e9794c96b2602736b758bac9d9388", "versionType": "git"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "llama.cpp builds b1886 through b7445 contain a double free vulnerability in the LLaMA-Android JNI wrapper where new_1batch() allocates memory using malloc() while free_1batch() deallocates it using the C++ delete operator, causing heap metadata corruption. Attackers can trigger this memory management mismatch to cause denial of service through process crashes or potentially achieve arbitrary code execution depending on allocator state.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>llama.cpp builds b1886 through b7445 contain a double free vulnerability in the LLaMA-Android JNI wrapper where new_1batch() allocates memory using malloc() while free_1batch() deallocates it using the C++ delete operator, causing heap metadata corruption. Attackers can trigger this memory management mismatch to cause denial of service through process crashes or potentially achieve arbitrary code execution depending on allocator state.</p>"}]}], "tags": ["x_open-source"], "references": [{"url": "https://github.com/ggml-org/llama.cpp/releases/tag/b7446", "tags": ["release-notes"]}, {"url": "https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388", "tags": ["patch"]}, {"url": "https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.5, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}}], "credits": [{"lang": "en", "value": "Vladimir Tokarev (@G1ND1L4) - Vulnerability Research Tech Lead, Cyera", "type": "finder"}, {"lang": "en", "value": "Ofek Itach (@ofekitach) - Security Research Team Lead, Cyera", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "vulncheck"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[b1886,b7445]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.9.0,0.17.1]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "code_commit", "value": "5c0d18881e0e9794c96b2602736b758bac9d9388"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "llama.cpp", "source": "cna", "vendor": "ggml-org"}, "product": "llama.cpp", "vendor": "ggml-org"}], "created": "2026-08-06T17:00:11.047355+00:00", "updated": "2026-08-06T17:15:01.719428+00:00", "vendors": ["ggml-org", "ggml-org$PRODUCT$llama.cpp"]}