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CVE-2026-72693 is a local privilege escalation vulnerability in openvt from the kbd package. The flaw affects the -u code path, which is intended to identify the owner of the current virtual terminal and then execute login as that user from a privileged context. In the documented kbrequest/init deployment, authenticate_user() determines ownership using stat() on /proc/<pid>/fd/0. Because stat() follows the /proc/<pid>/fd/0 symlink to the underlying TTY device node, the returned st_uid reflects the owner of the terminal device rather than the owner of the process holding the file descriptor. This can cause openvt to incorrectly conclude that an unprivileged process attached to the terminal belongs to the privileged console owner after logout or ownership reversion of the TTY. If that check succeeds, openvt -u proceeds to invoke a passwordless login as the selected user. In the documented openvt -us kbrequest/init usage, this can lead to passwordless login as root on the spawned virtual terminal.
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15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability tracked as CVE-2026-72693 affecting Miracle Linux 9 packages kbd, kbd-legacy, and kbd-misc; vendor severity is Moderate.
A vulnerability tracked as CVE-2026-72693 affecting Oracle Linux 9 packages including kbd, kbd-legacy, and kbd-misc, addressed by Oracle Linux advisory ELSA-2026-57610.
A vulnerability tracked as CVE-2026-72693 affecting Oracle Linux 10 packages related to kbd components, addressed by an Oracle Linux security update.
A specific vulnerability tracked as CVE-2026-72693 affecting Rocky Linux 9 kbd-related packages, referenced in a Rocky Linux local security check advisory.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.