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prionPRIOn knowledge basePRION:CVE-2017-5669
HistoryFeb 24, 2017 - 3:59 p.m.

Design/Logic Flaw

2017-02-2415:59:00
PRIOn knowledge base
www.prio-n.com
6

7.8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.