Description
The ed25519-dalek crate before 2 for Rust allows a double public key signing function oracle attack. The Keypair implementation leads to a simple computation for extracting a private key.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| dalek-cryptography | ed25519-dalek | < 2 | 2 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rust-curve25519-dalek | No fix yet | — |
| Ubuntu 26.04 LTS | rust-curve25519-dalek | No fix yet | — |
| Ubuntu 25.10 | rust-curve25519-dalek | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pijul | 1.0.0~beta.23-1.1 | openSUSE-SU-2026:11838-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| crates.io | ed25519-dalek | < 2.0.0 | 2.0.0 | GHSA-w5vr-6qhr-36cc |
| crates.io | ed25519-dalek | >= 0.0.0-0, < 2.0.0 | 2.0.0 | RUSTSEC-2022-0093 |
Advisories 1
- openSUSE-SU-2026:11838-1 pijul-1.0.0~beta.23-1.1 on GA media SUSE / openSUSE Security Updates · Sep 22, 2026