SB2016052313 - Use-after-free in Linux kernel

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Main Vulnerability Database SB2016052313

SB2016052313 - Use-after-free in Linux kernel

Published: May 23, 2016 Updated: June 3, 2024

Security Bulletin ID SB2016052313
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Use-after-free (CVE-ID: CVE-2016-4558)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to a use-after-free error within the replace_map_fd_with_map_ptr() function in kernel/bpf/verifier.c, within the __bpf_map_get(), bpf_map_get_with_uref(), __bpf_prog_get() and bpf_prog_get() functions in kernel/bpf/syscall.c, within the bpf_any_get() and bpf_obj_do_get() functions in kernel/bpf/inode.c. A local user can execute arbitrary code.


Remediation

Install update from vendor's website.

References