Linux Kernel up to 6.18.2 KEYS tpm2_load_cmd memory leak

CVSS Meta Temp Score
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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 5.15.197/6.1.159/6.6.119/6.12.63/6.18.2. This affects the function tpm2_load_cmd of the component KEYS. Such manipulation leads to memory leak. This vulnerability is listed as CVE-2025-71147. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.197/6.1.159/6.6.119/6.12.63/6.18.2. It has been rated as critical. Affected by this issue is the function tpm2_load_cmd of the component KEYS. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix a memory leak in tpm2_load_cmd 'tpm2_load_cmd' allocates a tempoary blob indirectly via 'tpm2_key_decode' but it is not freed in the failure paths. Address this by wrapping the blob into with a cleanup helper.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2025-71147 since 01/13/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 296390 (Linux Distros Unpatched Vulnerability : CVE-2025-71147), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.3 or 6.19-rc1 eliminates this vulnerability. Applying the patch 3fd7df4636d8fd5e3592371967a5941204368936/af0689cafb127a8d1af78cc8b72585c9b2a19ecd/19166de9737218b77122c41a5730ac87025e089f/9b015f2918b95bdde2ca9cefa10ef02b138aae1e/9e7c63c69f57b1db1a8a1542359a6167ff8fcef1/62cd5d480b9762ce70d720a81fa5b373052ae05f 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 databases at Tenable (296390) and CERT Bund (WID-SEC-2026-0215). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • NetApp ActiveIQ Unified Manager
  • Open Source Linux Kernel

Productinfo

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Version

License

Website

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: Memory leak
CWE: CWE-401 / 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: 296390
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71147

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.15.198/6.1.160/6.6.120/6.12.64/6.18.3/6.19-rc1
Patch: 3fd7df4636d8fd5e3592371967a5941204368936/af0689cafb127a8d1af78cc8b72585c9b2a19ecd/19166de9737218b77122c41a5730ac87025e089f/9b015f2918b95bdde2ca9cefa10ef02b138aae1e/9e7c63c69f57b1db1a8a1542359a6167ff8fcef1/62cd5d480b9762ce70d720a81fa5b373052ae05f

Timelineinfo

01/13/2026 CVE reserved
01/23/2026 +10 days Advisory disclosed
01/23/2026 +0 days VulDB entry created
05/17/2026 +114 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71147 (🔒)
GCVE (CVE): GCVE-0-2025-71147
GCVE (VulDB): GCVE-100-342548
CERT Bund: WID-SEC-2026-0215 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/23/2026 16:15
Updated: 05/17/2026 19:37
Changes: 01/23/2026 16:15 (59), 01/25/2026 12:46 (2), 01/26/2026 13:22 (7), 02/26/2026 23:51 (10), 03/02/2026 09:54 (1), 05/17/2026 19:37 (1)
Complete: 🔍
Cache ID: 216::103

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