Linux Kernel up to 6.5.2 rpmsg kstrdup 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 classified as critical was found in Linux Kernel up to 6.5.2. This affects the function kstrdup of the component rpmsg. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2023-54049. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.5.2. Affected by this issue is the function kstrdup of the component rpmsg. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: rpmsg: glink: Add check for kstrdup Add check for the return value of kstrdup() and return the error if it fails in order to avoid NULL pointer dereference.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2023-54049 since 12/24/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 280040 (Linux Distros Unpatched Vulnerability : CVE-2023-54049), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.53, 6.4.16 or 6.5.3 eliminates this vulnerability. Applying the patch 5197498c902502127a47abda5359dd7f1d41946f/13928a837e0f014dac0322dd9f8a67c486e7f232/efa7f31669f04084ed5996ed467ba529f4c90467/71ac2ffd7f80fdd350486f6645dc48456e55a59b/abd740db896b3c588dced175af98b95852c1854b/cae0787e408c30a575760a531ccb69a6b48bbfaf/174cf8853857c190a3c4f1f1d2d06cfd095fe859/e3734a9558afac91df3c655a6f2376b9d14933b7/b5c9ee8296a3760760c7b5d2e305f91412adc795 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 (280040) and CERT Bund (WID-SEC-2025-2929). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source Linux Kernel

Productinfo

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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

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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: 280040
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-54049

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.326/4.19.295/5.4.257/5.10.195/5.15.132/6.1.53/6.4.16/6.5.3
Patch: 5197498c902502127a47abda5359dd7f1d41946f/13928a837e0f014dac0322dd9f8a67c486e7f232/efa7f31669f04084ed5996ed467ba529f4c90467/71ac2ffd7f80fdd350486f6645dc48456e55a59b/abd740db896b3c588dced175af98b95852c1854b/cae0787e408c30a575760a531ccb69a6b48bbfaf/174cf8853857c190a3c4f1f1d2d06cfd095fe859/e3734a9558afac91df3c655a6f2376b9d14933b7/b5c9ee8296a3760760c7b5d2e305f91412adc795

Timelineinfo

12/24/2025 Advisory disclosed
12/24/2025 +0 days CVE reserved
12/24/2025 +0 days VulDB entry created
12/30/2025 +6 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-54049 (🔒)
GCVE (CVE): GCVE-0-2023-54049
GCVE (VulDB): GCVE-100-337988
CERT Bund: WID-SEC-2025-2929 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2025 14:29
Updated: 12/30/2025 04:00
Changes: 12/24/2025 14:29 (59), 12/27/2025 10:03 (2), 12/30/2025 04:00 (7)
Complete: 🔍
Cache ID: 216::103

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