Linux Kernel up to 6.12.4 grgpio devm_kasprintf null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.12.4. Affected by this issue is the function devm_kasprintf of the component grgpio. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2024-56634. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.12.4 and classified as critical. Affected by this vulnerability is the function devm_kasprintf of the component grgpio. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: gpio: grgpio: Add NULL check in grgpio_probe devm_kasprintf() can return a NULL pointer on failure,but this returned value in grgpio_probe is not checked. Add NULL check in grgpio_probe, to handle kernel NULL pointer dereference error.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2024-56634 since 12/27/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 216224 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20100)), 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, 6.6.66 or 6.12.5 eliminates this vulnerability. Applying the patch 53ff0caa6ad57372d426b4f48fc0f66df43a731f/4733f68e59bb7b9e3d395699abb18366954b9ba7/ad4dfa7ea7f5f7e9a3c78627cfc749bc7005ca7a/09adf8792b61c09ae543972a1ece1884ef773848/8d2ca6ac3711a4f4015d26b7cc84f325ac608edb/db2fc255fcf41f536ac8666409849e11659af88d/050b23d081da0f29474de043e9538c1f7a351b3b 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 (216224) 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

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 216224
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20100)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.287/5.10.231/5.15.174/6.1.120/6.6.66/6.12.5
Patch: 53ff0caa6ad57372d426b4f48fc0f66df43a731f/4733f68e59bb7b9e3d395699abb18366954b9ba7/ad4dfa7ea7f5f7e9a3c78627cfc749bc7005ca7a/09adf8792b61c09ae543972a1ece1884ef773848/8d2ca6ac3711a4f4015d26b7cc84f325ac608edb/db2fc255fcf41f536ac8666409849e11659af88d/050b23d081da0f29474de043e9538c1f7a351b3b

Timelineinfo

12/27/2024 🔍
12/27/2024 +0 days 🔍
12/27/2024 +0 days 🔍
01/12/2026 +381 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-56634 (🔍)
GCVE (CVE): GCVE-0-2024-56634
GCVE (VulDB): GCVE-100-289543
CERT Bund: WID-SEC-2024-3762 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/27/2024 18:28
Updated: 01/12/2026 14:50
Changes: 12/27/2024 18:28 (59), 02/13/2025 13:36 (2), 07/25/2025 06:02 (7), 01/12/2026 14:50 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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