https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 17:03:48 +0000 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-58050 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: libssh2, Ubuntu:Pro:16.04:LTS: libssh2, Ubuntu:Pro:18.04:LTS: libssh2, Ubuntu:Pro:20.04:LTS: libssh2, Ubuntu:22.04:LTS: libssh2, Ubuntu:24.04:LTS: libssh2, Ubuntu:25.10: libssh2, Ubuntu:26.04:LTS: libssh2</p> <p>libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap buffer overflow in a connecting libssh2 client.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: libssh2, Ubuntu:Pro:16.04:LTS: libssh2, Ubuntu:Pro:18.04:LTS: libssh2, Ubuntu:Pro:20.04:LTS: libssh2, Ubuntu:22.04:LTS: libssh2, Ubuntu:24.04:LTS: libssh2, Ubuntu:25.10: libssh2, Ubuntu:26.04:LTS: libssh2</p> <p>libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap buffer overflow in a connecting libssh2 client.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-58050