CVE-2021-44733

Updated: 2025-08-20 01:46:38.351743

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x MEDIUM 4.4
CVSS Version 3.x HIGH 7.0

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

AlmaLinux 9.2 ESU kernel 5.14.0 7.0 HIGH Already Fixed 2024-01-18 13:10:05
CentOS 6 ELS kernel 2.6.32 7.0 HIGH Not Vulnerable 2022-04-01 15:47:00
CentOS 7 ELS kernel 3.10.0 7.0 HIGH Not Vulnerable 2024-07-01 10:21:17
CentOS 8.4 ELS kernel 4.18.0 7.0 HIGH Released CLSA-2023:1693426883 2023-08-30 17:18:06
CentOS 8.5 ELS kernel 4.18.0 7.0 HIGH Released CLSA-2023:1693424916 2023-08-30 17:17:26
CentOS Stream 8 ELS kernel 4.18.0 7.0 HIGH Already Fixed 2024-06-09 11:20:32
CloudLinux 6 ELS kernel 2.6.32 7.0 HIGH Not Vulnerable 2022-04-01 15:47:00
CloudLinux 7 ELS kernel 3.10.0 7.0 HIGH Ignored 2025-01-10 22:43:41 CL7 support is limited
Oracle Linux 6 ELS kernel 2.6.32 7.0 HIGH Not Vulnerable 2022-04-01 15:47:00
Ubuntu 16.04 ELS linux-hwe 4.15.0 7.0 HIGH Already Fixed 2022-10-05 03:15:07
Total: 12