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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-849-1 linux security update
Debian DSA Debian DSA DSA-3804-1 linux security update
EUVD EUVD EUVD-2017-14746 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.
Ubuntu USN Ubuntu USN USN-3265-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3265-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3361-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3583-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3583-2 Linux kernel (Trusty 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: 2024-08-05T15:11:47.757Z

Reserved: 2017-01-31T00:00:00

Link: CVE-2017-5669

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-02-24T15:59:00.150

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

Link: CVE-2017-5669

cve-icon Redhat

Severity : Low

Publid Date: 2017-01-20T00:00:00Z

Links: CVE-2017-5669 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses