Vulnerability Details : CVE-2016-2550
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.
Vulnerability category: Denial of service
Products affected by CVE-2016-2550
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-2550
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-2550
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2016-2550
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-2550
-
https://bugzilla.redhat.com/show_bug.cgi?id=1311517
1311517 – (CVE-2016-2550) CVE-2016-2550 kernel: incorrectly accounted in-flight fds
-
http://www.ubuntu.com/usn/USN-2948-1
USN-2948-1: Linux kernel (Utopic HWE) vulnerabilities | Ubuntu security notices
-
http://www.ubuntu.com/usn/USN-2946-1
USN-2946-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://github.com/torvalds/linux/commit/415e3d3e90ce9e18727e8843ae343eda5a58fad6
unix: correctly track in-flight fds in sending process user_struct · torvalds/linux@415e3d3 · GitHubPatch;Vendor Advisory
-
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
Oracle Critical Patch Update - January 2018
-
http://www.debian.org/security/2016/dsa-3503
Debian -- Security Information -- DSA-3503-1 linux
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=415e3d3e90ce9e18727e8843ae343eda5a58fad6
kernel/git/torvalds/linux.git - Linux kernel source treeVendor Advisory
-
http://www.ubuntu.com/usn/USN-2949-1
USN-2949-1: Linux kernel (Vivid HWE) vulnerabilities | Ubuntu security notices
-
http://www.openwall.com/lists/oss-security/2016/02/23/2
oss-security - CVE Request: Linux: unix: correctly track in-flight fds in sending process user_struct sockets
-
http://www.ubuntu.com/usn/USN-2947-3
USN-2947-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security notices
-
http://www.ubuntu.com/usn/USN-2947-2
USN-2947-2: Linux kernel (Wily HWE) vulnerabilities | Ubuntu security notices
-
http://www.ubuntu.com/usn/USN-2946-2
USN-2946-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices
-
http://www.ubuntu.com/usn/USN-2947-1
USN-2947-1: Linux kernel vulnerabilities | Ubuntu security notices
-
http://www.ubuntu.com/usn/USN-2948-2
USN-2948-2: Linux kernel (Utopic HWE) regression | Ubuntu security notices
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