Linux Kernel up to 6.14.2 pci_register_host_bridge double free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.14.2. It has been classified as critical. This affects the function pci_register_host_bridge. Performing a manipulation results in double free. This vulnerability is known as CVE-2025-37836. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.14.2. This affects the function pci_register_host_bridge. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: PCI: Fix reference leak in pci_register_host_bridge() If device_register() fails, call put_device() to give up the reference to avoid a memory leak, per the comment at device_register(). Found by code review. [bhelgaas: squash Dan Carpenter's double free fix from https://lore.kernel.org/r/[email protected]]

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2025-37836 since 04/16/2025. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/15/2025).

The vulnerability scanner Nessus provides a plugin with the ID 237255 (Debian dla-4178 : ata-modules-5.10.0-34-armmp-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.24, 6.13.12, 6.14.3 or 6.15-rc1 eliminates this vulnerability. Applying the patch f4db1b2c9ae3d013733c302ee70cac943b7070c0/3297497ad2246eb9243849bfbbc57a0dea97d76e/b783478e0c53ffb4f04f25fb4e21ef7f482b05df/bd2a352a0d72575f1842d28c14c10089f0cfe1ae/9707d0c932f41006a2701afc926b232b50e356b4/bbba4c50a2d2a1d3f3bf31cc4b8280cb492bf2c7/f9208aec86226524ec1cb68a09ac70e974ea6536/804443c1f27883926de94c849d91f5b7d7d696e9 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 (237255). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: Double free
CWE: CWE-415 / CWE-119
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: 237255
Nessus Name: Debian dla-4178 : ata-modules-5.10.0-34-armmp-di - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.10.237/5.15.181/6.1.136/6.6.89/6.12.24/6.13.12/6.14.3/6.15-rc1
Patch: f4db1b2c9ae3d013733c302ee70cac943b7070c0/3297497ad2246eb9243849bfbbc57a0dea97d76e/b783478e0c53ffb4f04f25fb4e21ef7f482b05df/bd2a352a0d72575f1842d28c14c10089f0cfe1ae/9707d0c932f41006a2701afc926b232b50e356b4/bbba4c50a2d2a1d3f3bf31cc4b8280cb492bf2c7/f9208aec86226524ec1cb68a09ac70e974ea6536/804443c1f27883926de94c849d91f5b7d7d696e9

Timelineinfo

04/16/2025 🔍
05/09/2025 +23 days 🔍
05/09/2025 +0 days 🔍
11/15/2025 +189 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-37836 (🔍)
GCVE (CVE): GCVE-0-2025-37836
GCVE (VulDB): GCVE-100-308145

Entryinfo

Created: 05/09/2025 09:06
Updated: 11/15/2025 00:49
Changes: 05/09/2025 09:06 (58), 05/27/2025 05:45 (2), 11/15/2025 00:49 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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