CVE-2026-53706

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Source

https://cve.org/CVERecord?id=CVE-2026-53706

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53706.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-53706

Aliases

GHSA-65fp-5qmq-gg2m

Published

2026-09-02T17:54:59.163Z

Modified

2026-09-04T08:05:26.588957Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

PREVAIL: ALU32 pointer arithmetic accepted without is64 gate — verifier emits false PASS for pointer-corrupting programs

Details

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit result, the upper half of any pointer is silently destroyed at runtime, yet prevail marks the program as verified safe. Any caller that can submit an eBPF program for verification — including unprivileged users on kernels that permit BPF program loading — can produce a program that passes verification but faults or misbehaves at runtime. This issue has been patched in version 0.2.4.

Database specific

{
    "cwe_ids": [
        "CWE-682"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53706.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/vbpf/prevail

Affected ranges

Type

GIT

Repo

https://github.com/vbpf/prevail

Events

Introduced

Fixed

d3fab8c23a93d9a615bc741b254ab26391559e0f

Fixed

67b6d03ebaa3341e2eee2aa74502003fd11e31de

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.2.4"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.1-alpha

v0.1.2

v0.1.3

v0.2.0

v0.2.1

v0.2.2

v0.2.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53706.json"

vanir_signatures

[
    {
        "target": {
            "function": "operator()",
            "file": "src/crab/ebpf_transformer.cpp"
        },
        "signature_type": "Function",
        "source": "https://github.com/vbpf/prevail/commit/d3fab8c23a93d9a615bc741b254ab26391559e0f",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-53706-89245ead",
        "digest": {
            "function_hash": "28552403230649107889464395843172853694",
            "length": 11511.0
        }
    },
    {
        "target": {
            "file": "src/crab/ebpf_transformer.cpp"
        },
        "signature_type": "Line",
        "source": "https://github.com/vbpf/prevail/commit/d3fab8c23a93d9a615bc741b254ab26391559e0f",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-53706-d9d520e8",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "305426712048229099691819223429157164524",
                "293094795750483128538045441495386201911",
                "22378471966504801928172370970051852639",
                "9443954397261544060527683502098471595"
            ]
        }
    }
]

vanir_signatures_modified

"2026-09-04T08:05:26Z"