Use-after-free in Linux kernel - CVE-2018-20976
Published: September 6, 2019
Vulnerability identifier: #VU20917
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2018-20976
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists in "fs/xfs/xfs_super.c" due to a use-after-free error when the "xfs_fs_fill_super" fails. A local authenticated user can execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
How to mitigate CVE-2018-20976
Install updates from vendor's website.