Linux Kernel up to 6.1.41/6.4.6 fbdev release_mem_region assertion

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.1.41/6.4.6. Affected by this issue is the function release_mem_region of the component fbdev. Performing a manipulation results in an unknown weakness. This vulnerability is reported as CVE-2023-53448. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.1.41/6.4.6. This affects the function release_mem_region of the component fbdev. CWE is classifying the issue as CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: fbdev: imxfb: Removed unneeded release_mem_region Remove unnecessary release_mem_region from the error path to prevent mem region from being released twice, which could avoid resource leak or other unexpected issues.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-53448 since 09/17/2025. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/17/2026).

Upgrading to version 6.1.42 or 6.4.7 eliminates this vulnerability. Applying the patch 6aa851f6276fa08cd59b044bc2b803c49edf58a2/38282a92c30422836d49e519bd109237f86a0888/45fcc058a75bf5d65cf4c32da44a252fbe873cd4 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 EUVD (EUVD-2025-32822) and CERT Bund (WID-SEC-2025-2187). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• SUSE Linux
• Oracle Linux
• Open Source Linux Kernel
• Dell Secure Connect Gateway

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.1.22
• 6.1.23
• 6.1.24
• 6.1.25
• 6.1.26
• 6.1.27
• 6.1.28
• 6.1.29
• 6.1.30
• 6.1.31
• 6.1.32
• 6.1.33
• 6.1.34
• 6.1.35
• 6.1.36
• 6.1.37
• 6.1.38
• 6.1.39
• 6.1.40
• 6.1.41
• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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