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CVE-2016-9178

Date: November 27, 2016

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.

Language: C

Severity Score

Related Resources (11)

https://access.redhat.com/security/cve/CVE-2016-9178
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-9178
https://bugzilla.redhat.com/show_bug.cgi?id=1391908
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fabbd51863475cd12ac206bdd249aee35af
https://security-tracker.debian.org/tracker/CVE-2016-9178
https://nvd.nist.gov/vuln/detail/CVE-2016-9178
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35af
http://www.openwall.com/lists/oss-security/2016/11/04/4
http://www.securityfocus.com/bid/94144
https://www.mend.io/vulnerability-database/CVE-2016-9178

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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