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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2016-05-23T10:00:00

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

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

Link: CVE-2016-4557

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

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

Modified: 2023-01-17T21:40:08.990

Link: CVE-2016-4557

cve-icon Redhat

Severity : Important

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

Links: CVE-2016-4557 - Bugzilla