CVE-2016-2853: The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allo...

Security readout for executives and security teams

CVE-2016-2853 is a local privilege escalation issue in the Linux AUFS filesystem module for 3.x and 4.x kernels. An attacker already able to run code locally could potentially gain higher privileges. This is most urgent on shared Linux servers, build systems, and container hosts using AUFS. Exposure is limited to Linux systems using or allowing the AUFS module on 3.x or 4.x kernels. Risk is higher where untrusted local users, build jobs, or containers can interact with user, mount, or FUSE filesystem features. Prioritize shared Linux infrastructure and container/build hosts first. The issue is local-only, but successful exploitation could convert limited access into elevated privileges. Treat as high priority where AUFS and untrusted local workloads coexist. Mitigation focus: Check Linux distribution and kernel vendor guidance for AUFS-related updates.; Update affected kernels or AUFS packages where vendor fixes are available.; Disable or remove AUFS if it is not required..

Prepared

Jun 13, 2026, 19:17 UTC (UTC+00:00)

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