Incorrect Check of Function Return Value Affecting libssh-devel package, versions <0:0.10.4-19.el9_8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.33% (26th percentile)

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  • Snyk IDSNYK-ORACLE9-LIBSSHDEVEL-19639788
  • published7 Sept 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

CVE-2026-59847  (opens in a new tab)
CWE-253  (opens in a new tab)

How to fix?

Upgrade Oracle:9 libssh-devel to version 0:0.10.4-19.el9_8 or higher.
This issue was patched in ELSA-2026-62217-0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh-devel package and not the libssh-devel package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection.

CVSS Base Scores

version 3.1