Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Ubuntu Linux | 12.04 |
| Suse | Linux Enterprise Real Time Extension | 12 |
| Linux | Linux Kernel | < 4.4 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlThird Party Advisory
FAQ
What is CVE-2015-8539?
CVE-2015-8539 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 sec...
How severe is CVE-2015-8539?
CVE-2015-8539 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-8539?
Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux, Suse Linux Enterprise Real Time Extension, Linux Linux Kernel.