RLSA-2026:47755

Source
https://errata.rockylinux.org/RLSA-2026:47755
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:47755.json
JSON Data
https://api.osv.dev/v1/vulns/RLSA-2026:47755
Upstream
Published
2026-07-30T12:00:53.025496Z
Modified
2026-07-30T12:30:06.801883462Z
Severity
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N CVSS Calculator
Summary
Moderate: openssh security update
Details

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.

Security Fix(es):

  • openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux OpenSSH client versions (CVE-2026-55655)

  • openssh: Double free in Rocky Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service (CVE-2026-55653)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:8 / openssh

Package

Name
openssh
Purl
pkg:rpm/rocky-linux/openssh?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0:8.0p1-30.el8_10
Database specific
Show details
{
    "yum_repository": "BaseOS"
}

Database specific

source
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:47755.json"