CentOS Linux: CVE-2014-7975: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)
5
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
10/13/2014
08/29/2019
08/28/2019
05/25/2023
Description
The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.
Solution(s)
- centos-upgrade-kernel
- centos-upgrade-kernel-rt
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