Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2021-44733 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/pjlantz/optee-qemu/blob/main/README.md CVEExploitThird Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fbab49d CVEPatch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c CVEVendor Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html CVEMailing ListThird Party Advisory
https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/ CVEThird Party Advisory

see all 14 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')[email protected]

Affected Products

ProductVersions

Change History

29 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-44733
NVD Published Date:
Dec 22, 2021
NVD Last Modified:
Aug 5, 2026
Source:
[email protected]