Use-after-free error in Linux kernel - CVE-2018-14611
Published: August 1, 2018 / Updated: August 2, 2018
Vulnerability identifier: #VU14177
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:P/U:Clear
CVE-ID: CVE-2018-14611
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 attacker to gain elevated privileges on the target system.
The vulnerability exists due to use-after-free error in the btrfs_check_chunk_valid() function, as defined in the source code file fs/btrfs/volumes.c. A local attacker can mount a specially crafted Btrfs filesystem that submits malicious input, trigger memory corruption in the try_merge_free_space() function and cause the affected software to terminate abnormally or execute arbitrary code with elevated privileges..
Successful exploitation of the vulnerability may result in system compromise.
How to mitigate CVE-2018-14611
Update to version 4.17.11.