CVE-2022-50824 tpm: tpm_tis: Add the missed acpi_put_table() to fix memory leak
A memory leak in the Linux kernel TPM driver can lead to resource exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50824?
CVE-2022-50824 is a memory corruption vulnerability in Linux, published on 30 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
tpm: tpm_tis: Add the missed acpi_put_table() to fix memory leak
In check_acpi_tpm2(), we get the TPM2 table just to make sure the table is there, not used after the init, so the acpi_put_table() should be added to release the ACPI memory.
Which versions are affected by CVE-2022-50824?
How do I fix CVE-2022-50824?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-50824 being exploited?
There is no known exploitation of CVE-2022-50824 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50824, GHSA-vhhq-m77j-5mrm, UBUNTU-CVE-2022-50824.