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LIN8-5757 : Security Advisory - linux - CVE-2017-5551

Created: Feb 9, 2017    Updated: Dec 3, 2018
Resolved Date: Feb 21, 2017
Found In Version: 8.0.0.13
Fix Version: 8.0.0.15
Severity: Standard
Applicable for: Wind River Linux 8
Component/s: Kernel

Description

The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-5551

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