CVE-2018-16658

An issue was discovered in the Linux kernel before 4.18.6. An information leak in cdrom_ioctl_drive_status in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940.

• CWE-200

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f3fafc9c2f0ece10832c25f7ffcb07c97a32ad4Mailing List, Patch, Third Party Advisory
• http://www.securityfocus.com/bid/105334Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2019:2029
• https://access.redhat.com/errata/RHSA-2019:2043
• https://access.redhat.com/errata/RHSA-2019:4154
• https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.6Release Notes, Technical Description
• https://github.com/torvalds/linux/commit/8f3fafc9c2f0ece10832c25f7ffcb07c97a32ad4Patch
• https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing List, Third Party Advisory
• https://usn.ubuntu.com/3797-1/Mitigation, Third Party Advisory
• https://usn.ubuntu.com/3797-2/Mitigation, Third Party Advisory
• https://usn.ubuntu.com/3820-1/Third Party Advisory
• https://usn.ubuntu.com/3820-2/Third Party Advisory
• https://usn.ubuntu.com/3820-3/Third Party Advisory
• https://usn.ubuntu.com/3822-1/Third Party Advisory
• https://usn.ubuntu.com/3822-2/Third Party Advisory
• https://www.debian.org/security/2018/dsa-4308Third Party Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f3fafc9c2f0ece10832c25f7ffcb07c97a32ad4Mailing List, Patch, Third Party Advisory
• http://www.securityfocus.com/bid/105334Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2019:2029
• https://access.redhat.com/errata/RHSA-2019:2043
• https://access.redhat.com/errata/RHSA-2019:4154
• https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.6Release Notes, Technical Description
• https://github.com/torvalds/linux/commit/8f3fafc9c2f0ece10832c25f7ffcb07c97a32ad4Patch
• https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing List, Third Party Advisory
• https://usn.ubuntu.com/3797-1/Mitigation, Third Party Advisory
• https://usn.ubuntu.com/3797-2/Mitigation, Third Party Advisory
• https://usn.ubuntu.com/3820-1/Third Party Advisory
• https://usn.ubuntu.com/3820-2/Third Party Advisory
• https://usn.ubuntu.com/3820-3/Third Party Advisory
• https://usn.ubuntu.com/3822-1/Third Party Advisory
• https://usn.ubuntu.com/3822-2/Third Party Advisory
• https://www.debian.org/security/2018/dsa-4308Third Party Advisory

Published

Sep 7, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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