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LIN7-7569 : Security Advisory - linux - CVE-2017-5669

Created: Feb 27, 2017    Updated: Sep 8, 2018
Resolved Date: Mar 21, 2017
Found In Version: 7.0.0.22
Fix Version: 7.0.0.24
Severity: Standard
Applicable for: Wind River Linux 7
Component/s: Kernel

Description

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.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-5669

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