Release Date: | 2018-07-26 |
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//timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
See more information about CVE-2017-18344 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
Base Score: | 5.5 | Base Metrics: | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Access Vector: | Local network | Attack Complexity: | Low |
Privileges Required: | Low | User Interaction: | None |
Scope: | Unchanged | Confidentiality Impact: | High |
Integrity Impact: | None | Availability Impact: | None |
Platform | Errata | Release Date |
Oracle Linux version 5 (kernel-uek) | ELSA-2018-4214 | 2018-09-13 |
Oracle Linux version 6 (dtrace-modules-3.8.13-118.24.1.el6uek) | ELSA-2018-4211 | 2018-09-10 |
Oracle Linux version 6 (kernel-uek) | ELSA-2018-4196 | 2018-08-14 |
Oracle Linux version 6 (kernel-uek) | ELSA-2018-4211 | 2018-09-10 |
Oracle Linux version 6 (kernel-uek) | ELSA-2018-4214 | 2018-09-13 |
Oracle Linux version 7 (dtrace-modules-3.8.13-118.24.1.el7uek) | ELSA-2018-4211 | 2018-09-10 |
Oracle Linux version 7 (kernel) | ELSA-2018-3083 | 2018-11-05 |
Oracle Linux version 7 (kernel-uek) | ELSA-2018-4196 | 2018-08-14 |
Oracle Linux version 7 (kernel-uek) | ELSA-2018-4211 | 2018-09-10 |
Oracle VM version 3.4 (kernel-uek) | OVMSA-2018-0247 | 2018-08-14 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team