Low · published July 21, 2026
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.
| Product | Versions | Fixed in |
|---|---|---|
| libssh/libssh | all versions | — |
| redhat/hardened_images | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux_for_power_little_endian | all versions | — |
| redhat/enterprise_linux_for_power_little_endian | all versions | — |
| redhat/enterprise_linux_for_power_little_endian_els | all versions | — |
| redhat/enterprise_linux_for_power_little_endian_eus | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux_for_els | all versions | — |
| redhat/enterprise_linux_for_els | all versions | — |
| redhat/enterprise_linux_for_eus | all versions | — |
| redhat/enterprise_linux_for_eus | all versions | — |
| redhat/enterprise_linux_for_ibm_z_systems | all versions | — |
| redhat/enterprise_linux_for_ibm_z_systems | all versions | — |
| redhat/enterprise_linux_for_ibm_z_systems_els | all versions | — |
| redhat/enterprise_linux_for_ibm_z_systems_eus | all versions | — |