PT-2016-5202 · Linux+2 · Linux Kernel+2

David Herrmann · Published 2016-02-24 · Updated 2018-01-18 · CVE-2016-2550

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.5

Description The issue allows local users to bypass file-descriptor limits, causing a denial of service due to memory consumption. This is achieved by leveraging incorrect tracking of descriptor ownership and sending each descriptor over a UNIX socket before closing it.

Recommendations For versions prior to 4.5, update to version 4.5 or later to resolve the issue.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

ALT-PU-2016-1262

ALT-PU-2016-1485

CVE-2016-2550

DSA-3503-1

USN-2946-1

USN-2946-2

USN-2947-1

USN-2947-2

USN-2947-3

USN-2948-1

USN-2948-2

USN-2949-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 45

• https://github.com/torvalds/linux/commit/415e3d3e90ce9e18727e8843ae343eda5a58fad6 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-7833 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-2550 · Security Note
• https://osv.dev/vulnerability/USN-2947-2 · Vendor Advisory
• http://ubuntu.com/usn/USN-2947-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2946-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2947-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2383 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2949-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-2550 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2948-2 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-2550 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2085 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-2550 · Security Note
• https://ubuntu.com/security/CVE-2016-2782 · Vendor Advisory