CVE-2024-45056

zksolc is a Solidity compiler for ZKsync. All LLVM versions since 2015 fold
(xor (shl 1, x), -1) to (rotl ~1, x) if run with optimizations enabled.
Here ~1 is generated as an unsigned 64 bits number (2^64-1). This
number is zero-extended to 256 bits on EraVM target while it should have
been sign-extended. Thus instead of producing roti 2^256 - 1, x the
compiler produces rotl 2^64 - 1, x. Analysis has shown that no contracts
were affected by the date of publishing this advisory. This issue has been
addressed in version 1.5.3. Users are advised to upgrade and redeploy all
contracts. There are no known workarounds for this vulnerability.