Linux Kernel Multi-device Driver Module Out-of-Bounds Memory Write Vulnerability

CVE-2021-31916 · MEDIUM Severity

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

Learn more about our Cis Benchmark Audit For Distribution Independent Linux.