| Revision Date: | 2018-07-26 | Version: | 1 | | Title: | CVE-2017-18344 on Ubuntu 18.04 LTS (bionic) - high. | | 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). Andrey Konovalov discovered an out-of-bounds read in the POSIX timers subsystem in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information.
| | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2017-18344
| | Platform(s): | Ubuntu 18.04 LTS
| Product(s): | | | Definition Synopsis | | Ubuntu 18.04 LTS (bionic) is installed. AND Package Information
NOT While related to the CVE in some way, the 'linux' package in bionic is not affected (note: '4.15.0-10.11').
OR NOT While related to the CVE in some way, the 'linux-aws' package in bionic is not affected (note: '4.15.0-1001.1').
OR NOT While related to the CVE in some way, the 'linux-azure' package in bionic is not affected (note: '4.15.0-1002.2').
OR NOT While related to the CVE in some way, the 'linux-azure-edge' package in bionic is not affected (note: '4.18.0-1004.4~18.04.1').
OR NOT While related to the CVE in some way, the 'linux-gcp' package in bionic is not affected (note: '4.15.0-1001.1').
OR NOT While related to the CVE in some way, the 'linux-hwe' package in bionic is not affected.
OR NOT While related to the CVE in some way, the 'linux-hwe-edge' package in bionic is not affected (note: '4.18.0-11.12~18.04.1').
OR NOT While related to the CVE in some way, the 'linux-kvm' package in bionic is not affected (note: '4.15.0-1002.2').
OR NOT While related to the CVE in some way, the 'linux-oem' package in bionic is not affected (note: '4.15.0-1002.3').
OR NOT While related to the CVE in some way, the 'linux-raspi2' package in bionic is not affected (note: '4.15.0-1006.7').
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