SB2026092155 - Anolis OS update for libssh
Published: September 21, 2026
Security Bulletin ID
SB2026092155
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2026-59844)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input validation in the libssh SFTP server when processing SSH_FXP_READ requests. A remote user can send a specially crafted SSH_FXP_READ request with an excessive read length value to cause a denial of service.
The issue can be sustained by repeatedly issuing large read requests simultaneously over multiple SFTP channels.
Remediation
Install update from vendor's website.