Buffer over-read in Linux kernel - CVE-2018-16658
Published: October 23, 2018 / Updated: May 30, 2020
Vulnerability identifier: #VU15486
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-16658
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in cdrom_ioctl_drive_status() function in drivers/cdrom/cdrom.c. A local unprivileged user can create a specially crafted application, trigger out-of-bounds read error and read contents of kernel memory.
How to mitigate CVE-2018-16658
Install updates from vendor's website.
Sources
- https://github.com/torvalds/linux/commit/8f3fafc9c2f0ece10832c25f7ffcb07c97a32ad4
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.6
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.138
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.164
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.20
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.82