CVE Vulnerability

CVE-2021-44733

A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.

4.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c Vendor Advisory
https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander@linaro.org/ Mailing List Vendor Advisory
https://github.com/pjlantz/optee-qemu/blob/main/README.md Exploit Third Party Advisory
https://security.netapp.com/advisory/ntap-20220114-0003/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5096 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Information

Published : 2021-12-22 05:15

Updated : 2022-06-01 06:54

NVD link : CVE-2021-44733

Mitre link : CVE-2021-44733

Products Affected

Baseboard Management Controller H700s Firmware

Netapp

CWE
CWE-416