7

CVE-2021-44733

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version <= 5.15.11
Redhat ≫ Enterprise Linux Version8.0
Fedoraproject ≫ Fedora Version35
Debian ≫ Debian Linux Version9.0
Debian ≫ Debian Linux Version10.0
Debian ≫ Debian Linux Version11.0
Netapp ≫ H410c Firmware Version-
   Netapp ≫ H410c Version-
Netapp ≫ H300s Firmware Version-
   Netapp ≫ H300s Version-
Netapp ≫ H500s Firmware Version-
   Netapp ≫ H500s Version-
Netapp ≫ H700s Firmware Version-
   Netapp ≫ H700s Version-
Netapp ≫ H300e Firmware Version-
   Netapp ≫ H300e Version-
Netapp ≫ H500e Firmware Version-
   Netapp ≫ H500e Version-
Netapp ≫ H700e Firmware Version-
   Netapp ≫ H700e Version-
Netapp ≫ H410s Firmware Version-
   Netapp ≫ H410s Version-
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.69% 0.484
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.4 3.4 6.4
AV:L/AC:M/Au:N/C:P/I:P/A:P
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory
Mailing List
https://www.debian.org/security/2022/dsa-5096
Third Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dfd0743f1d9ea76931510ed150334d571fbab49d
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/tee/tee_shm.c
Vendor Advisory
https://github.com/pjlantz/optee-qemu/blob/main/README.md
Third Party Advisory
Exploit
https://lore.kernel.org/lkml/20211215092501.1861229-1-jens.wiklander%40linaro.org/
https://security.netapp.com/advisory/ntap-20220114-0003/
Third Party Advisory