SB20240702137 - Input validation error in Linux kernel keys trusted-keys
Published: July 2, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240702137
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2021-46922)
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.
References
- 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