The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file.
3.13.0-101.1483.19.0-74.82~14.04.14.4.0-47.68~14.04.14.4.0-47.684.4.0-1038.454.4.0-1035.39Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:HCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H