CVE-2026-53670
Severity not reportedPREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer.
PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add() silently skips offset-variable updates when the destination register carries a non-singleton typeset (two or more simultaneously possible pointer types). Subsequent bounds checks use the stale offset and accept out-of-bounds memory accesses, so a crafted BPF program passes verification even though it would corrupt memory at runtime. This issue has been patched in version 0.2.4.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/vbpf/prevail/commit/2b209bc4e3d612ff9aca87125e67c0ff84477e61 security-advisories@github.com
- https://github.com/vbpf/prevail/releases/tag/v0.2.4 security-advisories@github.com
- https://github.com/vbpf/prevail/security/advisories/GHSA-2qc8-qh94-66rc security-advisories@github.com
- https://github.com/vbpf/prevail/security/advisories/GHSA-2qc8-qh94-66rc 134c704f-9b21-4f2e-91b3-4a467353bcc0