{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53671", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T20:50:36.878Z", "datePublished": "2026-09-02T17:54:30.682Z", "dateUpdated": "2026-09-02T17:54:30.682Z"}, "containers": {"cna": {"title": "PREVAIL: Context-write no-op in do_mem_store allows unsafe eBPF programs to pass verification", "problemTypes": [{"descriptions": [{"cweId": "CWE-682", "lang": "en", "description": "CWE-682: Incorrect Calculation", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/vbpf/prevail/security/advisories/GHSA-65rv-h458-cq99", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/vbpf/prevail/security/advisories/GHSA-65rv-h458-cq99"}, {"name": "https://github.com/vbpf/prevail/commit/de65234f67d2608b54d12571edb585ead224363c", "tags": ["x_refsource_MISC"], "url": "https://github.com/vbpf/prevail/commit/de65234f67d2608b54d12571edb585ead224363c"}, {"name": "https://github.com/vbpf/prevail/releases/tag/v0.2.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/vbpf/prevail/releases/tag/v0.2.4"}], "affected": [{"vendor": "vbpf", "product": "prevail", "versions": [{"version": "< 0.2.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-02T17:54:30.682Z"}, "descriptions": [{"lang": "en", "value": "PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the abstract transformer in prevail treats writes through a T_CTX-typed base register as a silent no-op: do_mem_store in src/crab/ebpf_transformer.cpp only models T_STACK stores, and the checker's T_CTX bounds arm never tests AccessType::write. An attacker can craft an eBPF program that overwrites a context field (e.g., ctx->data), reload that field typed as T_PACKET, and dereference an attacker-controlled address \u2014 and prevail will report the program as safe. This issue has been patched in version 0.2.4."}], "source": {"advisory": "GHSA-65rv-h458-cq99", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "prevail", "vendor": "vbpf", "versions": [{"status": "affected", "version": "< 0.2.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the abstract transformer in prevail treats writes through a T_CTX-typed base register as a silent no-op: do_mem_store in src/crab/ebpf_transformer.cpp only models T_STACK stores, and the checker's T_CTX bounds arm never tests AccessType::write. An attacker can craft an eBPF program that overwrites a context field (e.g., ctx->data), reload that field typed as T_PACKET, and dereference an attacker-controlled address \u2014 and prevail will report the program as safe. This issue has been patched in version 0.2.4."}], "id": "CVE-2026-53671", "lastModified": "2026-09-02T18:20:00.293", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-02T18:20:00.293", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/vbpf/prevail/commit/de65234f67d2608b54d12571edb585ead224363c"}, {"source": "security-advisories@github.com", "url": "https://github.com/vbpf/prevail/releases/tag/v0.2.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/vbpf/prevail/security/advisories/GHSA-65rv-h458-cq99"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-682"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}