{"schema_version":"1.7.2","id":"OESA-2026-3505","modified":"2026-08-30T04:14:24Z","published":"2026-08-30T04:14:24Z","upstream":["CVE-2026-72693"],"summary":"kbd security update","details":"The  project contains tools for managing Linux console ,including  Linux console,virtual terminals, keyboard, etc, mainly, what they do  is loading console fonts and keyboard maps.\r\n\r\nSecurity Fix(es):\n\n`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.(CVE-2026-72693)","affected":[{"package":{"ecosystem":"openEuler:20.03-LTS-SP4","name":"kbd","purl":"pkg:rpm/openEuler/kbd&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0-4.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["kbd-2.2.0-4.oe2003sp4.aarch64.rpm","kbd-debuginfo-2.2.0-4.oe2003sp4.aarch64.rpm","kbd-debugsource-2.2.0-4.oe2003sp4.aarch64.rpm"],"noarch":["kbd-help-2.2.0-4.oe2003sp4.noarch.rpm","kbd-legacy-2.2.0-4.oe2003sp4.noarch.rpm","kbd-misc-2.2.0-4.oe2003sp4.noarch.rpm"],"src":["kbd-2.2.0-4.oe2003sp4.src.rpm"],"x86_64":["kbd-2.2.0-4.oe2003sp4.x86_64.rpm","kbd-debuginfo-2.2.0-4.oe2003sp4.x86_64.rpm","kbd-debugsource-2.2.0-4.oe2003sp4.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:22.03-LTS-SP4","name":"kbd","purl":"pkg:rpm/openEuler/kbd&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-3.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["kbd-2.5.1-3.oe2203sp4.aarch64.rpm","kbd-debuginfo-2.5.1-3.oe2203sp4.aarch64.rpm","kbd-debugsource-2.5.1-3.oe2203sp4.aarch64.rpm"],"noarch":["kbd-help-2.5.1-3.oe2203sp4.noarch.rpm","kbd-legacy-2.5.1-3.oe2203sp4.noarch.rpm","kbd-misc-2.5.1-3.oe2203sp4.noarch.rpm"],"src":["kbd-2.5.1-3.oe2203sp4.src.rpm"],"x86_64":["kbd-2.5.1-3.oe2203sp4.x86_64.rpm","kbd-debuginfo-2.5.1-3.oe2203sp4.x86_64.rpm","kbd-debugsource-2.5.1-3.oe2203sp4.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"kbd","purl":"pkg:rpm/openEuler/kbd&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-3.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["kbd-2.6.1-3.oe2403sp1.aarch64.rpm","kbd-debuginfo-2.6.1-3.oe2403sp1.aarch64.rpm","kbd-debugsource-2.6.1-3.oe2403sp1.aarch64.rpm"],"noarch":["kbd-help-2.6.1-3.oe2403sp1.noarch.rpm","kbd-legacy-2.6.1-3.oe2403sp1.noarch.rpm","kbd-misc-2.6.1-3.oe2403sp1.noarch.rpm"],"src":["kbd-2.6.1-3.oe2403sp1.src.rpm"],"x86_64":["kbd-2.6.1-3.oe2403sp1.x86_64.rpm","kbd-debuginfo-2.6.1-3.oe2403sp1.x86_64.rpm","kbd-debugsource-2.6.1-3.oe2403sp1.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"kbd","purl":"pkg:rpm/openEuler/kbd&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-3.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["kbd-2.6.1-3.oe2403sp3.aarch64.rpm","kbd-debuginfo-2.6.1-3.oe2403sp3.aarch64.rpm","kbd-debugsource-2.6.1-3.oe2403sp3.aarch64.rpm"],"noarch":["kbd-help-2.6.1-3.oe2403sp3.noarch.rpm","kbd-legacy-2.6.1-3.oe2403sp3.noarch.rpm","kbd-misc-2.6.1-3.oe2403sp3.noarch.rpm"],"src":["kbd-2.6.1-3.oe2403sp3.src.rpm"],"x86_64":["kbd-2.6.1-3.oe2403sp3.x86_64.rpm","kbd-debuginfo-2.6.1-3.oe2403sp3.x86_64.rpm","kbd-debugsource-2.6.1-3.oe2403sp3.x86_64.rpm"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP4","name":"kbd","purl":"pkg:rpm/openEuler/kbd&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-3.oe2403sp4"}]}],"ecosystem_specific":{"aarch64":["kbd-2.6.1-3.oe2403sp4.aarch64.rpm","kbd-debuginfo-2.6.1-3.oe2403sp4.aarch64.rpm","kbd-debugsource-2.6.1-3.oe2403sp4.aarch64.rpm"],"noarch":["kbd-help-2.6.1-3.oe2403sp4.noarch.rpm","kbd-legacy-2.6.1-3.oe2403sp4.noarch.rpm","kbd-misc-2.6.1-3.oe2403sp4.noarch.rpm"],"src":["kbd-2.6.1-3.oe2403sp4.src.rpm"],"x86_64":["kbd-2.6.1-3.oe2403sp4.x86_64.rpm","kbd-debuginfo-2.6.1-3.oe2403sp4.x86_64.rpm","kbd-debugsource-2.6.1-3.oe2403sp4.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3505"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72693"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"database_specific":{"severity":"High"}}