CVE-2021-31916

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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

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

Details

Source: MITRE

Published: 2021-05-06

Updated: 2021-06-23

Type: CWE-787

Risk Information

CVSS v2

Base Score: 6.1

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

Impact Score: 8.5

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 6.7

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

Impact Score: 5.9

Exploitability Score: 0.8

Severity: MEDIUM

Tenable Plugins

View all (22 total)

IDNameProductFamilySeverity
153271EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)NessusHuawei Local Security Checks
high
153080EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2336)NessusHuawei Local Security Checks
high
152327EulerOS 2.0 SP8 : kernel (EulerOS-SA-2021-2301)NessusHuawei Local Security Checks
high
152313EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2272)NessusHuawei Local Security Checks
high
152308EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2246)NessusHuawei Local Security Checks
high
151897Slackware 14.2 : Slackware 14.2 kernel (SSA:2021-202-01)NessusSlackware Local Security Checks
high
151570EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-2195)NessusHuawei Local Security Checks
high
151562EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-2183)NessusHuawei Local Security Checks
high
151464OracleVM 3.4 : Unbreakable / etc (OVMSA-2021-0022)NessusOracleVM Local Security Checks
medium
151307EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075)NessusHuawei Local Security Checks
high
151281Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9346)NessusOracle Linux Local Security Checks
medium
150985Debian DLA-2689-1 : linux security updateNessusDebian Local Security Checks
high
150984Debian DLA-2690-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
150784Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9305)NessusOracle Linux Local Security Checks
medium
150783Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9307)NessusOracle Linux Local Security Checks
high
150782Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9308)NessusOracle Linux Local Security Checks
medium
150778Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9306)NessusOracle Linux Local Security Checks
high
150292Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4984-1)NessusUbuntu Local Security Checks
medium
150233Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4982-1)NessusUbuntu Local Security Checks
medium
150155Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4979-1)NessusUbuntu Local Security Checks
medium
149872Amazon Linux AMI : kernel (ALAS-2021-1503)NessusAmazon Linux Local Security Checks
high
149407Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4948-1)NessusUbuntu Local Security Checks
high