CVE-2018-16658
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.
Does this matter?
Lower severity and a low EPSS score (0.55%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 6.1 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
- EPSS
- 0.55% probability · 46th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- linux/linux kernel · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
EPSS 0.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.