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.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-3791-1 linux security update
EUVD EUVD EUVD-2017-14652 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.
Ubuntu USN Ubuntu USN USN-3234-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3234-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3359-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3361-1 Linux kernel (HWE) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T15:04:15.335Z

Reserved: 2017-01-20T00:00:00

Link: CVE-2017-5551

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-02-06T06:59:00.717

Modified: 2025-04-20T01:37:25.860

Link: CVE-2017-5551

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-01-09T00:00:00Z

Links: CVE-2017-5551 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses