CVE-2018-12232
Medium
Description
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.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Linux Kernel
PublishedJun 12, 2018
First seenJun 12, 2018
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v ≤ 4.17.1 | — |
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