vulnerability
FreeBSD: VID-14a3b376-b30a-11e9-a87f-a4badb2f4699 (CVE-2019-5602): FreeBSD -- Privilege escalation in cd(4) driver
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:S/C:C/I:C/A:C) | Jul 30, 2019 | Jul 31, 2019 | Dec 10, 2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
Jul 30, 2019
Added
Jul 31, 2019
Modified
Dec 10, 2025
Description
Problem Description: To implement one particular ioctl, the Linux emulation code used a special interface present in the cd(4) driver which allows it to copy subchannel information directly to a kernel address. This interface was erroneously made accessible to userland, allowing users with read access to a cd(4) device to arbitrarily overwrite kernel memory when some media is present in the device. Impact: A user in the operator group can make use of this interface to gain root privileges on a system with a cd(4) device when some media is present in the device.
Solutions
freebsd-upgrade-base-12_0-release-p7freebsd-upgrade-base-11_2-release-p11
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