CVEs-PoC/2021/CVE-2021-46102.md

CVE-2021-46102

Description

From version 0.2.14 to 0.2.16 for Solana rBPF, function "relocate" in the file src/elf.rs has an integer overflow bug because the sym.st_value is read directly from ELF file without checking. If the sym.st_value is rather large, an integer overflow is triggered while calculating the variable "addr" via "addr = (sym.st_value + refd_pa) as u64";

POC

Reference

• https://blocksecteam.medium.com/new-integer-overflow-bug-discovered-in-solana-rbpf-7729717159ee
• c14764850f/src/elf.rs (L609-L630)

Github

No PoCs found on GitHub currently.