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PRIOn knowledge basePRION:CVE-2021-44733HistoryDec 22, 2021 - 5:15 p.m.
Race condition
2021-12-2217:15:00
PRIOn knowledge base
www.prio-n.com
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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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| debian_linux | eq | 9.0 | |
| debian_linux | eq | 10.0 | |
| debian_linux | eq | 11.0 | |
| fedora | eq | 35 | |
| linux_kernel | le | 5.15.11 | |
| enterprise_linux | eq | 8.0 |
References
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c
github.com/pjlantz/optee-qemu/blob/main/README.md
lists.debian.org/debian-lts-announce/2022/03/msg00012.html
lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/
security.netapp.com/advisory/ntap-20220114-0003/
www.debian.org/security/2022/dsa-5096
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