PT-2016-3249 · Linux+3 · Linux Kernel+3

Eyal Itkin · Published 2016-10-31 · Updated 2023-01-17 · CVE-2016-8636

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.9.10

Description The issue is caused by an integer overflow in the mem check range function, which can be exploited by local users to cause a denial of service, obtain sensitive information from kernel memory, or possibly have other unspecified impacts. This can be achieved via a write or read request involving the "RDMA protocol over infiniband" technology.

Recommendations For Linux kernel versions prior to 4.9.10, update to version 4.9.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the mem check range function in the rxe mr.c file until a patch is available. Avoid using the "RDMA protocol over infiniband" technology in the affected kernel versions to minimize the risk of exploitation.

Fix

DoS

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2017-1169

BDU:2018-00378

CVE-2016-8636

SUSE-SU-2019:1287-1

SUSE-SU-2019_1287-1

USN-3361-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 113

• https://github.com/torvalds/linux/commit/647bf3d8a8e5777319da92af672289b2a6c4dc66 · Patch
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=647bf3d8a8e5777319da92af672289b2a6c4dc66 · Patch
• https://ubuntu.com/security/CVE-2017-2671 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5551 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7273 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7261 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8636 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-8636 · Vendor Advisory
• https://bdu.fstec.ru/vul/2018-00378 · Security Note
• https://ubuntu.com/security/CVE-2017-5970 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.10 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9755 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-8636 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-8925 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9191 · Vendor Advisory