Untriaged
Libssh: memory exhaustion via repeated key exchange in libssh
A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.
Affected products
rhcos
libssh
- <0.11.4
- <0.11.3
libssh2
Matching in nixpkgs
pkgs.libssh2
Client-side C library implementing the SSH2 protocol
-
nixos-unstable -
- nixpkgs-unstable 1.11.1
pkgs.haskellPackages.libssh
libssh bindings
-
nixos-unstable -
- nixpkgs-unstable 0.1.0.0
pkgs.python312Packages.ansible-pylibssh
Python bindings to client functionality of libssh specific to Ansible use case
-
nixos-unstable -
- nixpkgs-unstable 1.2.2
pkgs.python313Packages.ansible-pylibssh
Python bindings to client functionality of libssh specific to Ansible use case
-
nixos-unstable -
- nixpkgs-unstable 1.2.2
pkgs.tests.pkg-config.defaultPkgConfigPackages.libssh2
Test whether libssh2-1.11.1 exposes pkg-config modules libssh2
-
nixos-unstable -
- nixpkgs-unstable libssh2
Package maintainers
-
@svanderburg Sander van der Burg <s.vanderburg@tudelft.nl>
-
@SuperSandro2000 Sandro Jäckel <sandro.jaeckel@gmail.com>
-
@geluk Johan Geluk <johan+nix@geluk.io>