CVE-2016-4794

Public Exploit

Description

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls.

7.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.05%

Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com

Affected: n/a n/a

References

Link	Tags
http://www.ubuntu.com/usn/USN-3054-1	third party advisory vendor advisory
https://source.android.com/security/bulletin/2016-12-01.html	third party advisory
http://www.ubuntu.com/usn/USN-3053-1	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3055-1	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3056-1	third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2016/05/12/6	mailing list exploit third party advisory
http://rhn.redhat.com/errata/RHSA-2016-2584.html	third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2574.html	third party advisory vendor advisory
https://lkml.org/lkml/2016/4/17/125	mailing list exploit third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1335889	issue tracking vdb entry third party advisory
http://www.ubuntu.com/usn/USN-3057-1	third party advisory vendor advisory
http://www.securityfocus.com/bid/90625	vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-4794?: CVE-2016-4794 has been scored as a high severity vulnerability.
How to fix CVE-2016-4794?: To fix CVE-2016-4794, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-4794 being actively exploited in the wild?: It is possible that CVE-2016-4794 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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