CVE-2016-2550

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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

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

http://www.debian.org/security/2016/dsa-3503

http://www.openwall.com/lists/oss-security/2016/02/23/2

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

http://www.ubuntu.com/usn/USN-2946-1

http://www.ubuntu.com/usn/USN-2946-2

http://www.ubuntu.com/usn/USN-2947-1

http://www.ubuntu.com/usn/USN-2947-2

http://www.ubuntu.com/usn/USN-2947-3

http://www.ubuntu.com/usn/USN-2948-1

http://www.ubuntu.com/usn/USN-2948-2

http://www.ubuntu.com/usn/USN-2949-1

https://bugzilla.redhat.com/show_bug.cgi?id=1311517

https://github.com/torvalds/linux/commit/415e3d3e90ce9e18727e8843ae343eda5a58fad6

Details

Source: MITRE

Published: 2016-04-27

Updated: 2018-01-18

Type: CWE-399

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.4.8 (inclusive)

Tenable Plugins

View all (13 total)

IDNameProductFamilySeverity
124989EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1536)NessusHuawei Local Security Checks
high
124816EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1492)NessusHuawei Local Security Checks
critical
90507Ubuntu 14.04 LTS : linux-lts-utopic regression (USN-2948-2)NessusUbuntu Local Security Checks
critical
90406Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2949-1)NessusUbuntu Local Security Checks
critical
90405Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2948-1)NessusUbuntu Local Security Checks
critical
90404Ubuntu 15.10 : linux-raspi2 vulnerabilities (USN-2947-3)NessusUbuntu Local Security Checks
critical
90403Ubuntu 14.04 LTS : linux-lts-wily vulnerabilities (USN-2947-2)NessusUbuntu Local Security Checks
critical
90402Ubuntu 15.10 : linux vulnerabilities (USN-2947-1)NessusUbuntu Local Security Checks
critical
90401Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2946-2)NessusUbuntu Local Security Checks
critical
90400Ubuntu 14.04 LTS : linux vulnerabilities (USN-2946-1)NessusUbuntu Local Security Checks
critical
89966Amazon Linux AMI : kernel (ALAS-2016-669)NessusAmazon Linux Local Security Checks
high
89482Fedora 23 : kernel-4.4.3-300.fc23 (2016-1642a20327)NessusFedora Local Security Checks
medium
89122Debian DSA-3503-1 : linux - security updateNessusDebian Local Security Checks
critical