Input validation error in Linux kernel keys trusted-keys
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-46922 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Linux kernel Operating systems & Components / Operating system |
| Vendor | Linux Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU93696
Risk: Low
CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-46922
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinux kernel: All versions
CPE2.3http://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4
http://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999
http://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
