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CVE-2026-58051 on CTRL-OS 26.05

Aliases: CVE-2026-58051

Packages: libssh2

Status: Plausible

Advisory Information

libssh2 through 1.11.1 grows its publickey list with SSH2_REALLOC but does not zero-initialize new entries before parsing populates them, so a parse failure reaching the cleanup path leaves libssh2_publickey_list_free operating on an uninitialized entry. A malicious SSH server offering the publickey subsystem can use a malformed response to make cleanup free an uninitialized, attacker-influenceable attrs pointer in a connecting libssh2 client.

Updates

2026-07-31 18:07 CEST

Metadata changes:

  • Status for package libssh2: “Plausible”

2026-07-31 00:59 CEST

Metadata changes:

  • Status for package libssh2: “New”