VDB
GHSA-4xqq-q6wp-w8h4
GHSA-4xqq-q6wp-w8h4
PUBLISHED
CVSS 7 HIGH
Record from GitHub Advisory Database · Published December 23, 2021
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.
Risk scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Timeline
- Dec 23, 2021 CVE Published
- Apr 9, 2026 Security Advisory
- Apr 29, 2026 Distribution Patch
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln GHSA-4xqq-q6wp-w8h4
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References
- https://nvd.nist.gov/vuln/detail/CVE-2021-44733 advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fbab49d url
- https://github.com/pjlantz/optee-qemu/blob/main/README.md url
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html url
- https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander@linaro.org url
- https://security.netapp.com/advisory/ntap-20220114-0003 url
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c url
- https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org url
- https://www.debian.org/security/2022/dsa-5096 url