CVE-2021-44733

 

Published at: - 22-12-2021 06:15

Last modified: - 26-10-2022 01:44

Total changes: - 9

Description

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c
• https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander@linaro.org/
• https://github.com/pjlantz/optee-qemu/blob/main/README.md
• https://security.netapp.com/advisory/ntap-20220114-0003/
• DSA-5096-Third Party Advisory
• [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2021-44733

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures