Double Free Affecting openssh package, versions [0,]


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
90.54% (100th percentile)

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  • Snyk IDSNYK-CONAN-OPENSSH-10078680
  • published8 May 2025
  • disclosed3 Feb 2023
  • creditMantas Mikulenas

Introduced: 3 Feb 2023

CVE-2023-25136  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

Affected versions of this package are vulnerable to Double Free during options.kex_algorithms handling. The double free can be triggered by an unauthenticated attacker in the default configuration.

CVSS Base Scores

version 3.1