Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.18.6 |
| Canonical | Ubuntu Linux | 12.04 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f3fafMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/105334Third Party AdvisoryVDB 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 NotesTechnical Description
- https://github.com/torvalds/linux/commit/8f3fafc9c2f0ece10832c25f7ffcb07c97a32adPatch
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing ListThird Party Advisory
- https://usn.ubuntu.com/3797-1/MitigationThird Party Advisory
- https://usn.ubuntu.com/3797-2/MitigationThird 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
FAQ
What is CVE-2018-16658?
CVE-2018-16658 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 cas...
How severe is CVE-2018-16658?
CVE-2018-16658 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16658?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Debian Debian Linux.