Linux kernel is vulnerable to memory corruption vulnerability. The vulnerability exists in the function cdrom_ioctl_media_changed of the file drivers/cdrom/cdrom.c. A privileged user could use an incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out some kernel memory contents.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9de4ee40547fd315d4a0ed1dd15a2fa3559ad707
www.securityfocus.com/bid/104154
access.redhat.com/articles/3553061
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.6_release_notes/index
access.redhat.com/errata/RHSA-2018:2948
access.redhat.com/errata/RHSA-2018:3083
access.redhat.com/errata/RHSA-2018:3096
access.redhat.com/security/cve/CVE-2017-18360
access.redhat.com/security/cve/CVE-2018-18690
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1322930
bugzilla.redhat.com/show_bug.cgi?id=1488484
bugzilla.redhat.com/show_bug.cgi?id=1504058
bugzilla.redhat.com/show_bug.cgi?id=1507027
bugzilla.redhat.com/show_bug.cgi?id=1542494
bugzilla.redhat.com/show_bug.cgi?id=1557434
bugzilla.redhat.com/show_bug.cgi?id=1557599
bugzilla.redhat.com/show_bug.cgi?id=1558328
bugzilla.redhat.com/show_bug.cgi?id=1561162
bugzilla.redhat.com/show_bug.cgi?id=1563697
bugzilla.redhat.com/show_bug.cgi?id=1564186
bugzilla.redhat.com/show_bug.cgi?id=1568167
bugzilla.redhat.com/show_bug.cgi?id=1572983
bugzilla.redhat.com/show_bug.cgi?id=1584775
bugzilla.redhat.com/show_bug.cgi?id=1592654
bugzilla.redhat.com/show_bug.cgi?id=1609717
github.com/torvalds/linux/commit/9de4ee40547fd315d4a0ed1dd15a2fa3559ad707
lists.debian.org/debian-lts-announce/2018/06/msg00000.html
lists.debian.org/debian-lts-announce/2018/07/msg00015.html
lists.debian.org/debian-lts-announce/2018/07/msg00016.html
lists.debian.org/debian-lts-announce/2018/07/msg00020.html
usn.ubuntu.com/3676-1/
usn.ubuntu.com/3676-2/
usn.ubuntu.com/3695-1/
usn.ubuntu.com/3695-2/
usn.ubuntu.com/3754-1/
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.6