CVEvulnerability
CVE-2017-18344
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-07-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.5 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-125
Description
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
Affected configurations
• linux linux kernel (< 4.14.8)
• canonical ubuntu linux 12.04
• canonical ubuntu linux 14.04
• redhat mrg realtime 2.0
• redhat enterprise linux desktop 7.0
• redhat enterprise linux server 7.0
• redhat enterprise linux server aus 7.2
• redhat enterprise linux server aus 7.3
• redhat enterprise linux server aus 7.4
• redhat enterprise linux server eus 7.3
• redhat enterprise linux server eus 7.5
• redhat enterprise linux server tus 7.2
• redhat enterprise linux server tus 7.3
• redhat enterprise linux server tus 7.4
• redhat enterprise linux workstation 7.0
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- http://www.securityfocus.com/bid/104909 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041414 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2948 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3083 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3459 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3540 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3586 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3590 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3591 Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 Third Party Advisory
- https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe Patch, Third Party Advisory
- https://usn.ubuntu.com/3742-1/ Third Party Advisory
- https://usn.ubuntu.com/3742-2/ Third Party Advisory
- https://www.exploit-db.com/exploits/45175/ Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/104909 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041414 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2948 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3083 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3459 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3540 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3586 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3590 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3591 Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 Third Party Advisory
- https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe Patch, Third Party Advisory
- https://usn.ubuntu.com/3742-1/ Third Party Advisory
- https://usn.ubuntu.com/3742-2/ Third Party Advisory
- https://www.exploit-db.com/exploits/45175/ Exploit, Third Party Advisory, VDB Entry