Out-of-bounds Read Affecting kernel-rt-trace-devel package, versions <0:3.10.0-957.rt56.910.el7
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2112620
- published 26 Jul 2021
- disclosed 15 Dec 2017
Introduced: 15 Dec 2017
CVE-2017-18344 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt-trace-devel to version 0:3.10.0-957.rt56.910.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace-devel package and not the kernel-rt-trace-devel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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).
References
- http://www.securityfocus.com/bid/104909
- https://access.redhat.com/security/cve/CVE-2017-18344
- https://www.exploit-db.com/exploits/45175/
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
- https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe
- https://access.redhat.com/errata/RHSA-2018:3096
- http://www.securitytracker.com/id/1041414
- https://usn.ubuntu.com/3742-1/
- https://usn.ubuntu.com/3742-2/
- https://www.exploit-db.com/exploits/45175