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vuln-cve/data/2026/53xxx/CVE-2026-53671.json
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{
"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": "2026-09-05T01:00:30.688Z"
},
"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 — 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"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/vbpf/prevail/security/advisories/GHSA-65rv-h458-cq99",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-05T00:59:35.326258Z",
"id": "CVE-2026-53671",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-05T01:00:30.688Z"
}
}
]
}
}