CVE-2016-9178

low-risk
Published 2016-11-28

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.

Do I need to act?

-
0.07% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (12)

Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109f...
Release Notes http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
Mailing List http://www.openwall.com/lists/oss-security/2016/11/04/4
http://www.securityfocus.com/bid/94144
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1391908
Issue Tracking https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35a...
Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109f...
Release Notes http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
Mailing List http://www.openwall.com/lists/oss-security/2016/11/04/4
http://www.securityfocus.com/bid/94144
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1391908
Issue Tracking https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35a...
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal