CVE & CISA-KEV Catalog

CVE-2016-4558

HIGH
7.0
CVSS v3
NVD

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.

How to fix

Remediation Available
linuxDebian
Fixed in:4.5.3-1CVE-2016-4558
Fixed in:4.5.3-1CVE-2016-4558
Fixed in:4.5.3-1CVE-2016-4558
Fixed in:4.5.3-1CVE-2016-4558
linuxUbuntu
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-1012-raspi2Ubuntu
Fixed in:4.4.0-1012.16USN-3007-1
linux-image-4.4.0-24-genericUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-generic-lpaeUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-lowlatencyUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc-e500mcUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc-smpUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc64-embUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc64-smpUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
linux-raspi2Ubuntu
Fixed in:4.4.0-1012.16USN-3007-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.86%probability of exploitation in 30 days
54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.