NULL pointer dereference in Linux kernel - CVE-2019-10140
Published: August 27, 2019
Vulnerability identifier: #VU20414
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-10140
CWE-ID: CWE-476
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 perform a denial of service (DoS) attack.
The vulnerability exists in the overlayfs implementation due to a NULL pointer dereference error in the "ovl_posix_acl_create" function in "the fs/overlayfs/dir.c" file. A local authenticated attacker with the ability to create directories on overlayfs can send malicious input to the system, trigger a NULL pointer dereference condition and cause a denial of service (DOS).
How to mitigate CVE-2019-10140
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.