CVE-2017-5669

 

Published at: - 24-02-2017 04:59

Last modified: - 26-10-2022 01:44

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7
• https://bugzilla.kernel.org/show_bug.cgi?id=192931
• 96754-Third Party Advisory, VDB Entry
• 1037918-Third Party Advisory, VDB Entry
• DSA-3804-Third Party Advisory
• USN-3583-2-Third Party Advisory
• USN-3583-1-Third Party Advisory
• https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8

 

Keywords

NVD

 

CVE-2017-5669

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures