Vulnerability · Published Jan 27, 2022 · Assigned by mitre
CVE-2021-46102
High 7.5
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 79% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.9%top 20.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 (as reported)
References
- https://blocksecteam.medium.com/new-integer-overflow-bug-discovered-in-solana-rbpf-7729717159ee x_refsource_MISC
- https://github.com/solana-labs/rbpf/blob/c14764850f0b83b58aa013248eaf6d65836c1218/src/elf.rs#L609-L630 x_refsource_MISC
- https://github.com/solana-labs/rbpf/pull/200 x_refsource_MISC
- https://github.com/solana-labs/rbpf/pull/236 x_refsource_MISC