SB2020120318 - Use after free in Linux kernel fs
Published: December 3, 2020
Security Bulletin ID
SB2020120318
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) Use after free (CVE-ID: CVE-2020-14381)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to use after free error within the get_futex_key_refs(), drop_futex_key_refs() and futex_setup_timer() functions in kernel/futex.c, within the inode_init_always() function in fs/inode.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.