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CVE-2021-44733

Public on 2021-12-22
Modified on 2022-01-26
Description

A use-after-free flaw in the Linux kernel TEE (Trusted Execution Environment) subsystem was found in the way user calls ioctl TEE_IOC_OPEN_SESSION or TEE_IOC_INVOKE. A local user could use this flaw to crash the system or escalate their privileges on the system. If the Linux system non configured with the CONFIG_PREEMPT option or CONFIG_CPU_SW_DOMAIN_PAN option enabled, then it is unlikely that a user can trigger this issue.

Severity
Medium
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CVSS v3 Base Score
7.4
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core kernel 2022-02-04 23:25 ALAS2-2022-1749

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv3 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P