{"id":"AZL-97428","summary":"CVE-2026-66033 affecting package rust 1.96.1-1","details":"libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit the underflow in the expression computing blocksize minus aadlen minus authentication tag length to trigger an out-of-bounds read and a memcpy call with a near-SIZE_MAX length argument, causing immediate process crash before any authentication occurs.","modified":"2026-09-12T05:27:53Z","published":"2026-07-24T17:17:35Z","upstream":["CVE-2026-66033"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66033"}],"affected":[{"package":{"name":"rust","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/rust"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.85.0"},{"last_affected":"1.96.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-97428.json"}}],"schema_version":"1.9.0"}