CVE-2021-31916

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1946965

https://github.com/torvalds/linux/commit/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a

https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html

https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

https://seclists.org/oss-sec/2021/q1/268

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3