CVE-2015-4176

Description

fs/namespace.c in the Linux kernel before 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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory kernel.org Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2015/06/04/5 mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1249442
https://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56f vendor advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56f vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-4176?
CVE-2015-4176 has been scored as a medium severity vulnerability.
How to fix CVE-2015-4176?
To fix CVE-2015-4176, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-4176 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-4176 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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