Description
The replace_map_fd_with_map_ptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service (use-after-free) via crafted BPF instructions that reference an incorrect file descriptor.
Published: 2016-05-23
Score: 7.8 High
EPSS: 19.5% Moderate
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-2965-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-2965-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-2965-3 Linux kernel (Raspberry Pi 2) vulnerabilities
Ubuntu USN Ubuntu USN USN-2965-4 Linux kernel (Qualcomm Snapdragon) vulnerability
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Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-06T00:32:25.891Z

Reserved: 2016-05-06T00:00:00.000Z

Link: CVE-2016-4557

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2016-05-23T10:59:03.707

Modified: 2026-05-06T22:30:45.220

Link: CVE-2016-4557

cve-icon Redhat

Severity : Important

Publid Date: 2016-04-26T00:00:00Z

Links: CVE-2016-4557 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses