CVE-2021-31916: debian debian_linux Out-of-bounds Write

Vulnerability summary

CVE-2021-31916 is a medium (CVSS 6.7) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 53.3% of scored vulnerabilities.

Timeline

1. 06-05-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.