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CVE-2021-44733

HIGH

7.0

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.

CVE Details

CVSS v3.1 Score7.0

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published12/22/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

debian:debian_linuxfedoraproject:fedoralinux:linux_kernelnetapp:h300enetapp:h300e_firmwarenetapp:h300snetapp:h300s_firmwarenetapp:h410cnetapp:h410c_firmwarenetapp:h410snetapp:h410s_firmwarenetapp:h500enetapp:h500e_firmwarenetapp:h500snetapp:h500s_firmwarenetapp:h700enetapp:h700e_firmwarenetapp:h700snetapp:h700s_firmwareredhat:enterprise_linux

Weaknesses (CWE)

CWE-362

References

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fbab49d(cve@mitre.org)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c(cve@mitre.org)

https://github.com/pjlantz/optee-qemu/blob/main/README.md(cve@mitre.org)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(cve@mitre.org)

https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/(cve@mitre.org)

https://security.netapp.com/advisory/ntap-20220114-0003/(cve@mitre.org)

https://www.debian.org/security/2022/dsa-5096(cve@mitre.org)

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fbab49d(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/pjlantz/optee-qemu/blob/main/README.md(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(af854a3a-2127-422b-91ae-364da2661108)

https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20220114-0003/(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2022/dsa-5096(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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