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CVE-2026-59842 on CTRL-OS 26.05

Aliases: CVE-2026-59842

Packages: libssh

Status: In Progress

Advisory Information

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

Updates

2026-07-22 16:13 CEST

Metadata changes:

  • Status for package libssh: “In Progress” (e4af1cf93dd485cb924c1a7f0f0a314be95d6544)

(Amended on: 2026-07-22 16:14 CEST)

2026-07-21 16:03 CEST

Metadata changes:

  • Status for package libssh: “Plausible”

2026-07-21 16:03 CEST

Metadata changes:

  • Status for package libssh: “New”