Description
LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
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 | libressl | 3.3.4-1.2 | openSUSE-SU-2024:10985-1 |
Advisories 1
- openSUSE-SU-2024:10985-1 libcrypto46-3.3.4-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026