VDB-289759 · CVE-2024-56756 · Nessus 214781

Linux Kernel up to 6.12.1 nvme-pci __nvme_alloc_host_mem allocation of resources

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.12.1. This affects the function __nvme_alloc_host_mem of the component nvme-pci. This manipulation causes allocation of resources. The identification of this vulnerability is CVE-2024-56756. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.12.1 and classified as problematic. Affected by this vulnerability is the function __nvme_alloc_host_mem of the component nvme-pci. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is 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. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix freeing of the HMB descriptor table The HMB descriptor table is sized to the maximum number of descriptors that could be used for a given device, but __nvme_alloc_host_mem could break out of the loop earlier on memory allocation failure and end up using less descriptors than planned for, which leads to an incorrect size passed to dma_free_coherent. In practice this was not showing up because the number of descriptors tends to be low and the dma coherent allocator always allocates and frees at least a page.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2024-56756 since 12/29/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 214781 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:0236-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64, 6.11.11 or 6.12.2 eliminates this vulnerability. Applying the patch ac22240540e0c5230d8c4138e3778420b712716a/452f9ddd12bebc04cef741e8ba3806bf0e1fd015/869cf50b9c9d1059f5223f79ef68fc0bc6210095/fb96d5cfa97a7363245b3dd523f475b04296d87b/cee3bff51a35cab1c5d842d409a7b11caefe2386/6d0f599db73b099aa724a12736369c4d4d92849d/582d9ed999b004fb1d415ecbfa86d4d8df455269/3c2fb1ca8086eb139b2a551358137525ae8e0d7a 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 (214781) and CERT Bund (WID-SEC-2024-3762). Be aware that VulDB is the high quality source for vulnerability data.

Affected

Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
RESF Rocky Linux
Dell NetWorker
Dell Avamar
Red Hat OpenShift
IBM QRadar SIEM
Dell PowerProtect Data Domain
Open Source Linux Kernel
IBM DataPower Gateway
Dell Secure Connect Gateway

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 214781
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:0236-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Timelineinfo

12/29/2024 🔍
12/29/2024 +0 days 🔍
12/29/2024 +0 days 🔍
02/14/2026 +412 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-56756 (🔍)
GCVE (CVE): GCVE-0-2024-56756
GCVE (VulDB): GCVE-100-289759
CERT Bund: WID-SEC-2024-3762 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/29/2024 13:17
Updated: 02/14/2026 22:00
Changes: 12/29/2024 13:17 (58), 01/07/2025 09:30 (11), 01/29/2025 23:30 (2), 02/14/2026 22:00 (7)
Complete: 🔍
Cache ID: 216::103