Published: 02/05/2016 Updated: 05/05/2016

CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 187

Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N

fs/namespace.c in the Linux kernel prior to 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory.

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A flaw was found in the Linux kernel where the deletion of a file or directory could trigger an unmount and reveal data under a mount point This flaw was inadvertently introduced with the new feature of being able to lazily unmount a mount tree when using file system user namespaces ...

CWE-200 https://bugzilla.redhat.com/show_bug.cgi?id=1249442 http://www.openwall.com/lists/oss-security/2015/06/04/5 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2 https://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56f http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56f https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2015-4176

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CVE-2015-4176

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