PT-2016-7807 · Linux+2 · Linux Kernel+2

Spender · Published 2016-11-01 · Updated 2017-01-07 · CVE-2016-9644

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions 4.4.22 through 4.4.28

Description The issue allows local users to obtain root access on non-SMEP platforms via a crafted application, due to extended asm statements in the get user asm ex macro that are incompatible with the exception table. This problem arose from incorrect backporting of a patch to older kernels.

Recommendations For Linux kernel versions 4.4.22 through 4.4.28, consider upgrading to a version that correctly includes the necessary patch to resolve the incompatibility issue with the exception table.

Fix

Weakness Enumeration

CWE-264

Related Identifiers

ALT-PU-2016-2226

CVE-2016-9644

USN-3146-1

USN-3146-2

USN-3161-4

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 27

• https://osv.dev/vulnerability/USN-3146-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9644 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-6213 · Vendor Advisory
• http://ubuntu.com/usn/USN-3146-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-9644 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8658 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-4568 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7425 · Vendor Advisory
• http://ubuntu.com/usn/USN-3146-2 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3161-4 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3146-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9555 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-9644 · Security Note
• https://ubuntu.com/security/notices/USN-3146-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8645 · Vendor Advisory