CVE-2016-4558

high
New! CVE Severity Now Using CVSS v3

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Description

The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted application on (1) a system with more than 32 Gb of memory, related to the program reference count or (2) a 1 Tb system, related to the map reference count.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92117d8443bc5afacc8d5ba82e541946310f106e

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5

http://www.openwall.com/lists/oss-security/2016/05/06/4

http://www.ubuntu.com/usn/USN-3005-1

http://www.ubuntu.com/usn/USN-3006-1

http://www.ubuntu.com/usn/USN-3007-1

https://bugzilla.redhat.com/show_bug.cgi?id=1334303

https://github.com/torvalds/linux/commit/92117d8443bc5afacc8d5ba82e541946310f106e

Details

Source: MITRE

Published: 2016-05-23

Updated: 2016-08-02

Risk Information

CVSS v2

Base Score: 6.9

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

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7

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

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
124802EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1478)NessusHuawei Local Security Checks
high
92195Fedora 24 : kernel (2016-ef973efab7)NessusFedora Local Security Checks
high
92123Fedora 22 : kernel (2016-84fdc82b74)NessusFedora Local Security Checks
high
92055Fedora 23 : kernel (2016-06f1572324)NessusFedora Local Security Checks
high
91569Ubuntu 16.04 LTS : linux-raspi2 vulnerabilities (USN-3007-1)NessusUbuntu Local Security Checks
high
91568Ubuntu 16.04 LTS : linux vulnerabilities (USN-3006-1)NessusUbuntu Local Security Checks
high
91567Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3005-1)NessusUbuntu Local Security Checks
high
91241Amazon Linux AMI : kernel (ALAS-2016-703)NessusAmazon Linux Local Security Checks
high