In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-06-12T12:00:00

Updated: 2024-08-05T08:30:59.790Z

Reserved: 2018-06-12T00:00:00

Link: CVE-2018-12232

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-12T12:29:00.210

Modified: 2018-10-31T10:30:56.777

Link: CVE-2018-12232

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-06-04T00:00:00Z

Links: CVE-2018-12232 - Bugzilla