NULL pointer dereference in Linux kernel - CVE-2017-11176
Published: December 12, 2018 / Updated: June 17, 2021
Vulnerability identifier: #VU16551
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2017-11176
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition.
The vulnerability exists due to the mq_notify function does not set the sock pointer to NULL upon entry into the retry logic. A remote attacker can trigger use-after-free error during a user-space close of a Netlink socket and cause the service to crash.
How to mitigate CVE-2017-11176
Install update from vendor's website.