SB2016050228 - Input validation error in Linux kernel overlayfs

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Main Vulnerability Database SB2016050228

SB2016050228 - Input validation error in Linux kernel overlayfs

Published: May 2, 2016 Updated: July 11, 2024

Security Bulletin ID SB2016050228
CSH 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 vulnerability.


1) Input validation error (CVE-ID: CVE-2016-1576)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to improper input validation within the MODULE_AUTHOR(), ovl_entry_real(), ovl_dir_cache(), ovl_show_options(), ovl_parse_opt() and ovl_fill_super() functions in fs/overlayfs/super.c, within the ovl_cleanup_whiteouts() function in fs/overlayfs/readdir.c, within the ovl_setattr() and ovl_permission() functions in fs/overlayfs/inode.c, within the ovl_copy_xattr() function in fs/overlayfs/copy_up.c. A local user can execute arbitrary code.


Remediation

Install update from vendor's website.

References