CVE-2021-3348

high
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

nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.

References

http://www.openwall.com/lists/oss-security/2021/02/01/1

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258

https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html

https://www.openwall.com/lists/oss-security/2021/01/28/3

Details

Source: MITRE

Published: 2021-02-01

Updated: 2021-03-31

Type: CWE-362

Risk Information

CVSS v2

Base Score: 4.4

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

Impact Score: 6.4

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7

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

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 5.10.12 (inclusive)

Tenable Plugins

View all (27 total)

IDNameProductFamilySeverity
151167EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2021-2002)NessusHuawei Local Security Checks
high
150214EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1929)NessusHuawei Local Security Checks
high
150213EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1950)NessusHuawei Local Security Checks
high
149607EulerOS 2.0 SP8 : kernel (EulerOS-SA-2021-1879)NessusHuawei Local Security Checks
high
148634EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1715)NessusHuawei Local Security Checks
high
148604EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1751)NessusHuawei Local Security Checks
high
148497Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4909-1)NessusUbuntu Local Security Checks
high
148493Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4907-1)NessusUbuntu Local Security Checks
high
148492Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4910-1)NessusUbuntu Local Security Checks
high
148350Photon OS 4.0: Linux PHSA-2021-4.0-0007NessusPhotonOS Local Security Checks
high
148254Debian DLA-2610-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
147973Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4884-1)NessusUbuntu Local Security Checks
high
147588EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-1386)NessusHuawei Local Security Checks
high
147454SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0739-1)NessusSuSE Local Security Checks
high
147452SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0742-1)NessusSuSE Local Security Checks
high
147205Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9087)NessusOracle Linux Local Security Checks
high
147204Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9085)NessusOracle Linux Local Security Checks
high
147203Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9086)NessusOracle Linux Local Security Checks
high
147202Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9084)NessusOracle Linux Local Security Checks
high
146685SUSE SLES15 Security Update : kernel (SUSE-SU-2021:0532-1)NessusSuSE Local Security Checks
high
146631Amazon Linux 2 : kernel (ALAS-2021-1600)NessusAmazon Linux Local Security Checks
high
146569Amazon Linux AMI : kernel (ALAS-2021-1480)NessusAmazon Linux Local Security Checks
high
146474SUSE SLES15 Security Update : kernel (SUSE-SU-2021:0438-1)NessusSuSE Local Security Checks
high
146470SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0434-1)NessusSuSE Local Security Checks
high
146406SUSE SLES15 Security Update : kernel (SUSE-SU-2021:0427-1)NessusSuSE Local Security Checks
high
146366SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:0354-1)NessusSuSE Local Security Checks
high
146293openSUSE Security Update : the Linux Kernel (openSUSE-2021-241)NessusSuSE Local Security Checks
high