CVE-2015-8539

Description

The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory kernel.org Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1284450 issue tracking third party advisory
https://access.redhat.com/errata/RHSA-2018:0181 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd vendor advisory
https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd issue tracking patch vendor advisory
http://www.openwall.com/lists/oss-security/2015/12/09/1 issue tracking mailing list patch third party advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:0152 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:0151 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html third party advisory vendor advisory
https://usn.ubuntu.com/3798-1/ third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html third party advisory vendor advisory
https://usn.ubuntu.com/3798-2/ third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8539?
CVE-2015-8539 has been scored as a high severity vulnerability.
How to fix CVE-2015-8539?
To fix CVE-2015-8539, 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-2015-8539 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-8539 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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