CVE-2016-2550

MEDIUM

Linux Kernel < 4.4.8 - Resource Management Error

Title source: rule

Description

The Linux kernel before 4.5 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by leveraging incorrect tracking of descriptor ownership and sending each descriptor over a UNIX socket before closing it. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-4312.

References (14)

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2947-3

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2948-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2948-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2949-1

[Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=415e3d3e90ce9e18727e8843ae343eda5a58fad6

[Vendor Advisory] http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2946-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2946-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2947-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2947-2

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=1311517

[Patch, Vendor Advisory] https://github.com/torvalds/linux/commit/415e3d3e90ce9e18727e8843ae343eda5a58fad6

[Third Party Advisory] http://www.debian.org/security/2016/dsa-3503

[Mailing List] http://www.openwall.com/lists/oss-security/2016/02/23/2

Scores

CVSS v3 5.5

EPSS 0.0002

EPSS Percentile 5.7%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-399

Status draft

Affected Products (1)

linux/linux_kernel < 4.4.8

Timeline

Published Apr 27, 2016

Tracked Since Feb 18, 2026