CVEvulnerability
CVE-2017-5669
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2017-02-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
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.
Affected configurations
• linux linux kernel (< 4.11)
• debian debian linux 8.0
• canonical ubuntu linux 12.04
• canonical ubuntu linux 14.04
References
- http://www.debian.org/security/2017/dsa-3804 Third Party Advisory
- http://www.securityfocus.com/bid/96754 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037918 Third Party Advisory, VDB Entry
- https://bugzilla.kernel.org/show_bug.cgi?id=192931 Issue Tracking, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8 Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7 Patch, Third Party Advisory
- https://usn.ubuntu.com/3583-1/ Third Party Advisory
- https://usn.ubuntu.com/3583-2/ Third Party Advisory
- http://www.debian.org/security/2017/dsa-3804 Third Party Advisory
- http://www.securityfocus.com/bid/96754 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037918 Third Party Advisory, VDB Entry
- https://bugzilla.kernel.org/show_bug.cgi?id=192931 Issue Tracking, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8 Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7 Patch, Third Party Advisory
- https://usn.ubuntu.com/3583-1/ Third Party Advisory
- https://usn.ubuntu.com/3583-2/ Third Party Advisory