Threats Tagged 'cve-2026-72693'

The kbd packages provide tools for managing console behavior on a Linux system, including the keyboard, screen fonts, virtual terminals, and font files. Security Fix(es): * kbd: Local privilege escalation in openvt via incorrect process owner verification allowing passwordless root login (CVE-2026-72693) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

`openvt -u` is intended to identify the owner of the current VT and then execute `login` as that user from a privileged context. In the documented `kbrequest`/init usage, the ownership test in `authenticate_user()` relies on `stat("/proc/<pid>/fd/0")`. `stat()` on `/proc/<pid>/fd/0` follows the symlink to the underlying TTY device node. As a result, `buf.st_uid` reflects the owner of the TTY node rather than the owner of the process holding the file descriptor. If the TTY owner returns to `root` or the getty owner after logout while an unprivileged process still has `fd 0` attached to that TTY, the check can incorrectly treat that process as belonging to the privileged console owner. Once that check succeeds, the `-u` path executes a passwordless login as the selected user. In the documented `kbrequest`/init deployment using `openvt -us`, this can result in passwordless `login -f root` on the spawned VT. This report establishes that privilege escalation path for that documented deployment; it does not claim equivalent reachability for deployments that do not use `openvt -u` from a privileged `kbrequest`/init path.

This update includes the following RPMs: rust: * cargo-1.96.1-1.hum1 (aarch64, x86_64) * clippy-1.96.1-1.hum1 (aarch64, x86_64) * rust-1.96.1-1.hum1 (aarch64, x86_64) * rust-analyzer-1.96.1-1.hum1 (aarch64, x86_64) * rust-debugger-common-1.96.1-1.hum1 (noarch) * rust-doc-1.96.1-1.hum1 (aarch64, x86_64) * rust-gdb-1.96.1-1.hum1 (noarch) * rust-lldb-1.96.1-1.hum1 (noarch) * rust-src-1.96.1-1.hum1 (noarch) * rust-std-static-1.96.1-1.hum1 (aarch64, x86_64) * rust-std-static-aarch64-unknown-none-softfloat-1.96.1-1.hum1 (noarch) * rust-std-static-aarch64-unknown-uefi-1.96.1-1.hum1 (noarch) * rust-std-static-i686-pc-windows-gnu-1.96.1-1.hum1 (noarch) * rust-std-static-wasm32-unknown-unknown-1.96.1-1.hum1 (noarch) * rust-std-static-wasm32-wasip1-1.96.1-1.hum1 (noarch) * rust-std-static-x86_64-pc-windows-gnu-1.96.1-1.hum1 (noarch) * rust-std-static-x86_64-unknown-none-1.96.1-1.hum1 (noarch) * rust-std-static-x86_64-unknown-uefi-1.96.1-1.hum1 (noarch) * rustfmt-1.96.1-1.hum1 (aarch64, x86_64) * rust-1.96.1-1.hum1.src (src)