CVE-2016-4558

HIGH
7
CVSS Score
Published: May 23, 2016 at 10:00 AM UTC
Updated: June 17, 2026 at 12:47 AM UTC
2 products affected across 2 vendorsLinux KernelUbuntu Linux

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Severity
HIGH7
Exploit prediction
EPSS 0.9%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.4 ≤ v < 4.4.114.5 ≤ v < 4.5.5
Affected range stops below 4.4.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5.5, so it looks safe — our inference, not a vendor statement

References (8)

Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/06/4
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
http://www.ubuntu.com/usn/USN-3005-1
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
http://www.ubuntu.com/usn/USN-3006-1
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
http://www.ubuntu.com/usn/USN-3007-1
x_refsource_CONFIRMIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1334303

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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