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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. The ad_gpo_extract_smb_components() function in SSSD's AD GPO provider converts backslashes to forward slashes in the gPCFileSysPath LDAP attribute but does not sanitize .. path components. A differential between libsmbclient's path clamping (resolves .. at the share root) and the kernel's path resolution (resolves .. fully) allows an attacker with AD GPO management access to write files outside the GPO cache directory as root. On SELinux-enforcing systems (the default on RHEL), the traversal can target /var/lib/sss/pubconf/krb5.include.d/ (labeled sssd_public_t), enabling Kerberos KDC redirection and authentication bypass. On SELinux-permissive or disabled systems, arbitrary file write as root is possible.
Upstream PR: https://github.com/SSSD/sssd/pull/8896
https://github.com/SSSD/sssd/commit/ba207eab76ff5253662a763b9b6e9ea42f03d31b
FEDORA-2026-5acfb0243b (CVE-2026-12610 CVE-2026-14474 CVE-2026-14476) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-5acfb0243b
FEDORA-2026-9ab663dcd4 (CVE-2026-12610 CVE-2026-14474 CVE-2026-14476) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-9ab663dcd4
FEDORA-2026-5acfb0243b has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-5acfb0243b` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5acfb0243b See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-9ab663dcd4 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-9ab663dcd4` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-9ab663dcd4 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-8fad0036a5 (sssd-2.13.1-3.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-8fad0036a5
FEDORA-2026-8fad0036a5 (sssd-2.13.1-3.fc45) has been pushed to the Fedora 45 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-5acfb0243b (CVE-2026-12610 CVE-2026-14474 CVE-2026-14476) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-9ab663dcd4 (CVE-2026-12610 CVE-2026-14474 CVE-2026-14476) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.