CVE-2026-45881
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Memory Leak in Linux Kernel SVS Driver

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: soc: mediatek: svs: Fix memory leak in svs_enable_debug_write() In svs_enable_debug_write(), the buf allocated by memdup_user_nul() is leaked if kstrtoint() fails. Fix this by using __free(kfree) to automatically free buf, eliminating the need for explicit kfree() calls and preventing leaks. [Angelo: Added missing cleanup.h inclusion]
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Meta Information
Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-06-16
AI Q&A
2026-05-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-45881
EUVD
EUVD-2026-32347
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mediatek svs *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's MediaTek SVS driver, specifically in the function svs_enable_debug_write().

The issue occurs because a buffer allocated by memdup_user_nul() is not freed if the subsequent call to kstrtoint() fails, causing the memory to be leaked.

The fix involves using __free(kfree) to automatically free the buffer, preventing the memory leak by eliminating the need for explicit kfree() calls.

Impact Analysis

A memory leak in the kernel can lead to increased memory usage over time, potentially causing system instability or degraded performance.

If exploited or triggered repeatedly, it could exhaust system memory resources, possibly leading to crashes or denial of service conditions.

Mitigation Strategies

The vulnerability is fixed in the Linux kernel by correcting a memory leak in the svs_enable_debug_write() function of the mediatek svs driver.

To mitigate this vulnerability, you should update your Linux kernel to a version that includes this fix.

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