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CVE-2016-4558

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Date: May 23, 2016

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.

Language: C

Severity Score

Related Resources (11)

http://www.ubuntu.com/usn/USN-3006-1
https://github.com/torvalds/linux/commit/92117d8443bc5afacc8d5ba82e541946310f106e
http://www.ubuntu.com/usn/USN-3005-1
https://bugzilla.redhat.com/show_bug.cgi?id=1334303
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
https://nvd.nist.gov/vuln/detail/CVE-2016-4558
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-4558
http://www.ubuntu.com/usn/USN-3007-1
https://www.mend.io/vulnerability-database/CVE-2016-4558

Severity Score

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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