CVE-2017-5669 | BDVDB-2026-82080 Detail
Description#
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://usn.ubuntu.com/3583-2/
- https://usn.ubuntu.com/3583-1/
- http://www.securitytracker.com/id/1037918
- http://www.securityfocus.com/bid/96754
- http://www.debian.org/security/2017/dsa-3804
- https://bugzilla.kernel.org/show_bug.cgi?id=192931
- https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8
- https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.