CVE-2017-5551

MediumCVSS 4.4/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 4.4/10CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected software

No affected versions have been published.

Timeline

Published: Feb 6, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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