SB2017020711 - Privilege escalation in Linux kernel aio
Published: February 7, 2017 Updated: November 29, 2024
Security Bulletin ID
SB2017020711
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2016-10044)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper privilege management within the aio_mount() function in fs/aio.c. A local user can bypass SELinux W^X policy restrictions and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.
References
- https://github.com/torvalds/linux/commit/22f6b4d34fcf039c63a94e7670e0da24f8575a5a
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.7
- http://source.android.com/security/bulletin/2017-02-01.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=22f6b4d34fcf039c63a94e7670e0da24f8575a5a