USN-9046-1: MySQL vulnerabilities
USN-9046-1
Summary
It was discovered that libssh2 incorrectly handled certain publickey subsystem attributes. A remote attacker controlling a malicious SSH server could use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-58050)
It was discovered that libssh2 did not properly initialize publickey list entries before parsing. A remote attacker controlling a malicious SSH server could use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-58051)
It was discovered that libssh2 incorrectly handled certain SFTP server responses. A remote attacker controlling an SSH server could use this issue to cause libssh2 to crash or possibly execute arbitrary code. (CVE-2026-66032)
It was discovered that libssh2 did not properly check bounds in certain publickey subsystem responses. A remote attacker controlling a malicious SSH server could use this issue to cause a denial of service or possibly execute arbitrary code.. (CVE-2026-66034)
Products covered
A separate affected-products list was not included in the collected bulletin.
Remediation
Separate remediation guidance was not included in the collected bulletin.
CVEs in this advisory 4
Updates
- Published by Ubuntu
The publication date reported by the vendor.
- Added to SecurityAlert
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- Confirmed at the source
Our collector saw this advisory during a later source check.