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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-02-24T15:00:00

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 : Analyzed

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

Modified: 2020-10-09T14:49:28.933

Link: CVE-2017-5669

cve-icon Redhat

Severity : Low

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

Links: CVE-2017-5669 - Bugzilla