Linux Kernel up to 6.1.12 sysctl Table Registration net/mpls/af_mpls.c double free

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 6.1.12. This vulnerability affects unknown code of the file net/mpls/af_mpls.c of the component sysctl Table Registration Handler. This manipulation causes double free. This vulnerability is registered as CVE-2023-26545. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.12 (Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the file net/mpls/af_mpls.c of the component sysctl Table Registration Handler. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. The impact remains unknown. The summary by CVE is:

In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table under a new location) during the renaming of a device.

The weakness was published 02/25/2023. The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2023-26545. Technical details are known, but no exploit is available.

Upgrading to version 6.1.13 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch 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 EUVD (EUVD-2023-30342). 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: 5.1
VulDB Meta Temp Score: 5.0

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

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.1.13
Patch: git.kernel.org

Timelineinfo

02/25/2023 🔍
02/25/2023 +0 days 🔍
02/25/2023 +0 days 🔍
11/10/2025 +988 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: fda6c89fe3d9aca073495a664e1d5aea28cd4377
Status: Confirmed

CVE: CVE-2023-26545 (🔍)
GCVE (CVE): GCVE-0-2023-26545
GCVE (VulDB): GCVE-100-221785
EUVD: 🔍

Entryinfo

Created: 02/25/2023 16:36
Updated: 11/10/2025 00:27
Changes: 02/25/2023 16:36 (42), 03/25/2023 08:46 (2), 03/25/2023 08:50 (11), 03/21/2025 02:24 (21), 11/10/2025 00:27 (1)
Complete: 🔍
Cache ID: 216::103

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

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