It was discovered that OpenSSH's sftp client incorrectly handled paths returned by the server during a recursive copy operation. A remote attacker controlling the server could possibly use this issue to write files to unintended locations. (CVE-2026-106552) It was discovered that OpenSSH's sshd server incorrectly handled GSSAPIAuthentication state across authentication attempts.
USN-8928-1: OpenSSH vulnerabilities
About this summary. This is a short excerpt from the description that Ubuntu Security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://ubuntu.com/security/notices/USN-8928-1
Source attribution: headline and facts are from Ubuntu Security (ubuntu.com). Summary method: excerpt of the source description. See our source attribution policy.
Related coverage
USN-8927-2: curl vulnerabilities
USN-8927-1 fixed vulnerabilities in curl. This update provides the corresponding fixes for Ubuntu 26.10. Original advisory details: It was discovered that curl, when…
USN-8927-1: curl vulnerabilities
It was discovered that curl, when built with GnuTLS support, had an out-of-bounds read in the WebSocket send path. An attacker could possibly use this issue to obtain…
USN-8830-1: phpseclib vulnerabilities
It was discovered that phpseclib did not perform constant-time padding validation when using AES in CBC mode. A remote attacker could possibly use this issue to obtain…
USN-8957-1: authd vulnerability
Ali Mashally discovered that authd did not properly validate user identities when matching accounts from identity providers. An attacker could possibly use this issue to…
Backporting security fixes to stable releases
The software you are running is almost certainly riddled with known, unfixed security bugs. These bugs can be trivially and quickly exploited by modern AI agents. This…
Amutable Foundations is a Linux system with no SSH and no package manager
Amutable opened signups for the private preview of Amutable Foundations, a Linux system in which each machine sends a signed report of the software and configuration it…