Advisory Published

USN-2647-1: Linux kernel vulnerability

First published: Mon Jun 15 2015(Updated: )

Philip Pettersson discovered a privilege escalation when using overlayfs mounts inside of user namespaces. A local user could exploit this flaw to gain administrative privileges on the system.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.19.0-21-powerpc-e500mc<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-21-powerpc-smp<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-21-powerpc64-smp<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-21-powerpc64-emb<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-21-lowlatency<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-21-generic<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04
All of
ubuntu/linux-image-3.19.0-21-generic-lpae<3.19.0-21.21
3.19.0-21.21
Ubuntu Ubuntu=15.04

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