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
2026-05-07
AI Q&A
2025-12-30
EPSS Evaluated
2026-05-05
NVD
CVE-2022-50824
EUVD
EUVD-2022-55874
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

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.


How can this vulnerability impact me? :

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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