What’s Vulnerable › Vulnerabilities

CVE-2021-46102

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-27 · updated 2026-06-17
• Weakness: CWE-190

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";

Affected products

• Solanalabs Rbpf: from 0.2.14 through 0.2.16

References

• https://blocksecteam.medium.com/new-integer-overflow-bug-discovered-in-solana-rbpf-7729717159ee
• https://github.com/solana-labs/rbpf/blob/c14764850f0b83b58aa013248eaf6d65836c1218/src/elf.rs#L609-L630
• https://github.com/solana-labs/rbpf/pull/200
• https://github.com/solana-labs/rbpf/pull/236
• https://blocksecteam.medium.com/new-integer-overflow-bug-discovered-in-solana-rbpf-7729717159ee
• https://github.com/solana-labs/rbpf/blob/c14764850f0b83b58aa013248eaf6d65836c1218/src/elf.rs#L609-L630
• https://github.com/solana-labs/rbpf/pull/200
• https://github.com/solana-labs/rbpf/pull/236

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