CVE-2021-31916

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.

CVSS v3.0 6.7 MEDIUM
CVSS v2.0 6.1 MEDIUM

6.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.1^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:C

Exploitability : 3.9 / Impact : 8.5

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact COMPLETE

References

Link	Resource
https://seclists.org/oss-sec/2021/q1/268	Mailing List Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1946965	Issue Tracking Patch Third Party Advisory
https://github.com/torvalds/linux/commit/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Information

Published : 2021-05-06 10:15

Updated : 2022-01-01 09:51

NVD link : CVE-2021-31916

Mitre link : CVE-2021-31916

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

redhat

enterprise_linux

debian

debian_linux

linux

linux_kernel

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