CVE-2022-50824
Unknown Unknown - Not Provided
Memory Leak in Linux Kernel TPM_TIS Due to Missing ACPI Release

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

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.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50824
EUVD
EUVD-2022-55874
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's TPM (Trusted Platform Module) driver, specifically in the tpm_tis component. The issue occurs because the function check_acpi_tpm2() retrieves the TPM2 ACPI table to verify its presence but fails to release the ACPI memory afterwards by missing a call to acpi_put_table(). This causes a memory leak.

Impact Analysis

The memory leak caused by this vulnerability can lead to inefficient memory usage in the system, potentially degrading system performance or stability over time if the leaked memory accumulates.

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