Use After Free Affecting libssh package, versions <0.9.8-0+deb11u2


Severity

Recommended
0.0
low
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.23% (13th percentile)

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  • Snyk IDSNYK-DEBIAN11-LIBSSH-10498796
  • published25 Jun 2025
  • disclosed22 Jul 2025

Introduced: 25 Jun 2025

CVE-2025-4878  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:11 libssh to version 0.9.8-0+deb11u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh package and not the libssh package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption.

CVSS Base Scores

version 3.1