CVE-2017-18344

CVE Details

Release Date:2018-07-26

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//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


CVSS v3.0 metrics


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

Errata information


PlatformErrataRelease Date
Oracle Linux version 5 (kernel-uek)ELSA-2018-42142018-09-13
Oracle Linux version 6 (dtrace-modules-3.8.13-118.24.1.el6uek)ELSA-2018-42112018-09-10
Oracle Linux version 6 (kernel-uek)ELSA-2018-41962018-08-14
Oracle Linux version 6 (kernel-uek)ELSA-2018-42112018-09-10
Oracle Linux version 6 (kernel-uek)ELSA-2018-42142018-09-13
Oracle Linux version 7 (dtrace-modules-3.8.13-118.24.1.el7uek)ELSA-2018-42112018-09-10
Oracle Linux version 7 (kernel)ELSA-2018-30832018-11-05
Oracle Linux version 7 (kernel-uek)ELSA-2018-41962018-08-14
Oracle Linux version 7 (kernel-uek)ELSA-2018-42112018-09-10
Oracle VM version 3.4 (kernel-uek)OVMSA-2018-02472018-08-14



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

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