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.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.02%
Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory debian.org Third-Party Advisory debian.org Third-Party Advisory seclists.org
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1946965 issue tracking third party advisory patch
https://github.com/torvalds/linux/commit/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a third party advisory patch
https://seclists.org/oss-sec/2021/q1/268 third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-31916?
CVE-2021-31916 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31916?
To fix CVE-2021-31916, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31916 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31916 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31916?
CVE-2021-31916 affects n/a kernel.
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