vulnerability
Red Hat: CVE-2018-12232: Important: kernel-alt security, bug fix, and enhancement update (RHSA-2018:2948)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:N/A:C) | 2018-06-12 | 2018-10-31 | 2021-03-03 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
2018-06-12
Added
2018-10-31
Modified
2021-03-03
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.
Solution
redhat-upgrade-kernel
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