Description
An integer overflow in Nethermind Juno before v.12.05 within the Sierra bytecode decompression logic within the "cairo-lang-starknet-classes" library could allow remote attackers to trigger an infinite loop (and high CPU usage) by submitting a malicious Declare v2/v3 transaction. This results in a denial-of-service condition for affected Starknet full-node implementations.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250402T160203-1.1 | openSUSE-SU-2025:14970-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/NethermindEth/juno | < 0.12.5 | 0.12.5 | GHSA-wq32-8rp4-w2mc |
Advisories 1
- openSUSE-SU-2025:14970-1 govulncheck-vulndb-0.0.20250402T160203-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026