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CVE-2025-71077
tpm: Cap the number of PCR banks
Description

In the Linux kernel, the following vulnerability has been resolved: tpm: Cap the number of PCR banks tpm2_get_pcr_allocation() does not cap any upper limit for the number of banks. Cap the limit to eight banks so that out of bounds values coming from external I/O cause on only limited harm.

INFO

Published Date :

Jan. 13, 2026, 4:16 p.m.

Last Modified :

Jan. 13, 2026, 4:16 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-71077 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Apply kernel updates to limit TPM PCR banks to eight to prevent out-of-bounds issues.
  • Update the Linux kernel to the latest version.
  • Configure the TPM module with PCR bank limits.
  • Restart affected systems after updates.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-71077.

URL Resource
https://git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50
https://git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1
https://git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96
https://git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23
https://git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-71077 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-71077 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-71077 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-71077 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jan. 13, 2026

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: tpm: Cap the number of PCR banks tpm2_get_pcr_allocation() does not cap any upper limit for the number of banks. Cap the limit to eight banks so that out of bounds values coming from external I/O cause on only limited harm.
    Added Reference https://git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50
    Added Reference https://git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1
    Added Reference https://git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96
    Added Reference https://git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23
    Added Reference https://git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.