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Canonical Apologizes for Linux Kernel Regression in Ubuntu, Patch Released

By Marius Nestor

It would appear that the Linux kernel update released on June 15, 2015, which was supposed to patch the CVE-2015-1328 bug related to a privilege escalation when using OverlayFS mounts inside of user namespaces, introduced a regression. The regression was introduced into the Linux kernel’s OverlayFS filesystem and it could create a kernel panic by removing the directory that existed only on the lower layer.

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