---
cve: "CVE-2017-5551"
severity: "LOW"
cvss: 3.1
epss: "40%"
vendor: "n/a"
kev: false
exploited: false
published: "2017-02-06 06:59:00"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T22:42:29+02:00"
---

# CVE-2017-5551

> 3.1 LOW · 🧪 PoC

## Beschreibung

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.

## Referenzen

- <http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31>
- <http://www.openwall.com/lists/oss-security/2017/01/21/3>
- <http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6>
- <http://www.securityfocus.com/bid/95717>
- <https://bugzilla.redhat.com/show_bug.cgi?id=1416126>
- <https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31>
- <http://www.debian.org/security/2017/dsa-3791>
- <http://www.securitytracker.com/id/1038053>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2017-5551) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_