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CVE-2014-5206

Published: Aug 18, 2014

Modified: Aug 6, 2024

PUBLISHED

Description

The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd

x_refsource_CONFIRM

vendor-advisory

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vdb-entry

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https://bugzilla.redhat.com/show_bug.cgi?id=1129662

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https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd

x_refsource_CONFIRM

[oss-security] 20140813 Re: CVE Request: ro bind mount bypass using user namespaces

mailing-list

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vendor-advisory

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