CVE-2011-1678: smbfs in Samba 3.5.8 and earlier attempts to use (1) mount.cifs to append to the /etc/mtab file and (2) umo...

Security readout for executives and security teams

CVE-2011-1678 is a local issue in Samba smbfs handling where mount helpers could corrupt /etc/mtab when a user process has a very small file-size limit. Business risk is mainly on older Linux systems with local user access and affected Samba packages. Exposure is most likely on legacy Linux systems running Samba 3.5.8 or earlier, especially where untrusted local users can execute mount-related helper paths. The provided affected-product metadata is incomplete, so validate against installed vendor packages and backported fixes. Prioritize remediation during legacy Linux maintenance cycles unless affected systems allow untrusted local users. Escalate if the host is shared, multi-user, or supports sensitive operations dependent on accurate mount state. Mitigation focus: Upgrade Samba or related smbfs packages using vendor security updates.; Check distribution advisories for backported fixes before relying on version strings.; Restrict local shell access on systems that still require affected packages..

Prepared

Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.