CVE-2021-44733
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-44733
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-44733.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-44733
- Aliases
-
- A-213173524
- PUB-A-213173524
- Downstream
- Related
- Published
- 2021-12-22T17:15:09Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A use-after-free exists in drivers/tee/teeshm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in teeshmgetfrom_id during an attempt to free a shared memory object.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c
- https://github.com/pjlantz/optee-qemu/blob/main/README.md
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20220114-0003/
- https://www.debian.org/security/2022/dsa-5096
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fbab49d
- https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/