Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck<cpu number> directory. NOTE: a third party has indicated that this report is not security relevant
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
| Link | Tags |
|---|---|
| https://www.debian.org/security/2018/dsa-4187 | third party advisory vendor advisory |
| https://usn.ubuntu.com/3654-1/ | third party advisory vendor advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1084755 | third party advisory issue tracking |
| https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b3b7c4795ccab5be71f080774c45bbbcc75c2aaf | patch vendor advisory |
| https://www.debian.org/security/2018/dsa-4188 | third party advisory vendor advisory |
| https://lkml.org/lkml/2018/3/2/970 | third party advisory patch |
| http://www.securityfocus.com/bid/103356 | third party advisory vdb entry |
| https://usn.ubuntu.com/3654-2/ | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html | third party advisory mailing list |
| https://usn.ubuntu.com/3656-1/ | third party advisory vendor advisory |