Out-of-bounds Read Affecting libssh-config package, versions <0:0.12.1-4.hum1


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.42% (36th percentile)

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  • Snyk IDSNYK-RHEL10-LIBSSHCONFIG-18223990
  • published23 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-59842  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:10 libssh-config to version 0:0.12.1-4.hum1 or higher.
This issue was patched in RHSA-2026:42922.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh-config package and not the libssh-config package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

CVSS Base Scores

version 3.1