Vulnerability Database

299,699

Total vulnerabilities in the database

CVE-2016-4557

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: May 23, 2016
  • Updated: Nov 9, 2025
  • CVE: CVE-2016-4557
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.8
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 7.2
  • AV:L/AC:L/Au:N/C:C/I:C/A:C

No CWE or OWASP classifications available.

Software From Fixed in
linux / linux_kernel 4.4 4.4.11
linux / linux_kernel 4.5 4.5.5