Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2 tpm tpm2_get_pcr_allocation allocation of resources

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2. Affected is the function tpm2_get_pcr_allocation of the component tpm. Such manipulation leads to allocation of resources. This vulnerability is listed as CVE-2025-71077. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2. It has been rated as critical. Affected by this issue is the function tpm2_get_pcr_allocation of the component tpm. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. CVE summarizes:

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.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2025-71077 since 01/13/2026. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 298917 (SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0472-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.160, 6.6.120, 6.12.64, 6.18.3 or 6.19-rc1 eliminates this vulnerability. Applying the patch ceb70d31da5671d298bad94ae6c20e4bbb800f96/d88481653d74d622d1d0d2c9bad845fc2cc6fd23/b69492161c056d36789aee42a87a33c18c8ed5e1/858344bc9210bea9ab2bdc7e9e331ba84c164e50/faf07e611dfa464b201223a7253e9dc5ee0f3c9e is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (298917). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298917
Nessus Name: SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0472-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.160/6.6.120/6.12.64/6.18.3/6.19-rc1
Patch: ceb70d31da5671d298bad94ae6c20e4bbb800f96/d88481653d74d622d1d0d2c9bad845fc2cc6fd23/b69492161c056d36789aee42a87a33c18c8ed5e1/858344bc9210bea9ab2bdc7e9e331ba84c164e50/faf07e611dfa464b201223a7253e9dc5ee0f3c9e

Timelineinfo

01/13/2026 Advisory disclosed
01/13/2026 +0 days CVE reserved
01/13/2026 +0 days VulDB entry created
03/31/2026 +77 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71077 (🔒)
GCVE (CVE): GCVE-0-2025-71077
GCVE (VulDB): GCVE-100-340658

Entryinfo

Created: 01/13/2026 17:41
Updated: 03/31/2026 16:34
Changes: 01/13/2026 17:41 (59), 02/15/2026 00:59 (2), 03/25/2026 20:29 (10), 03/31/2026 16:34 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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