#VU93696 Input validation error in Linux kernel - CVE-2021-46922
Published: July 2, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93696
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-46922
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the tpm2_seal_trusted() function in security/keys/trusted-keys/trusted_tpm2.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4
- https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999
- https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.33
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12