Vulnerability Description
The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel before 4.7.5 does not initialize a certain integer variable, which allows local users to obtain sensitive information from kernel stack memory by triggering failure of a get_user_ex call.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.7.4 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fIssue TrackingPatchThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5Release Notes
- http://www.openwall.com/lists/oss-security/2016/11/04/4Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94144
- https://bugzilla.redhat.com/show_bug.cgi?id=1391908Issue Tracking
- https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35aIssue TrackingPatchThird Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fIssue TrackingPatchThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5Release Notes
- http://www.openwall.com/lists/oss-security/2016/11/04/4Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94144
- https://bugzilla.redhat.com/show_bug.cgi?id=1391908Issue Tracking
- https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35aIssue TrackingPatchThird Party Advisory
FAQ
What is CVE-2016-9178?
CVE-2016-9178 is a vulnerability with a CVSS score of 5.5 (MEDIUM). The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel before 4.7.5 does not initialize a certain integer variable, which allows local users to obtain sensitive information ...
How severe is CVE-2016-9178?
CVE-2016-9178 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-9178?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.