SECURITY Signal 142
seL4 confidentiality proof completed on AArch64, finishing formal security isolation verification
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Proofcraft has completed the formal mathematical proof that seL4 enforces confidentiality on AArch64, closing the final gap in the kernel's security isolation verification for that architecture.
Engineers building safety- or security-critical systems on AArch64 hardware can now rely on mathematically proven guarantees that seL4 prevents unauthorized information flow between applications. The completed proof chain, functional correctness, integrity, and now confidentiality, provides formal assurance that attacks on non-critical applications cannot propagate to compromise critical ones.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Proofcraft completed the confidentiality proof for seL4 on AArch64, the final piece needed to establish full formal security isolation verification on that architecture.
The proof mathematically demonstrates that the seL4 kernel prevents applications from learning information without authorization on AArch64.
NCSC provided continued support for this work, which completes the formal proof chain covering functional correctness, integrity, and confidentiality.
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