CVE-2026-23026
Modified Modified - Updated After Analysis
BaseFortify

Publication date: 2026-01-31

Last updated on: 2026-06-02

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config() Fix a memory leak in gpi_peripheral_config() where the original memory pointed to by gchan->config could be lost if krealloc() fails. The issue occurs when: 1. gchan->config points to previously allocated memory 2. krealloc() fails and returns NULL 3. The function directly assigns NULL to gchan->config, losing the reference to the original memory 4. The original memory becomes unreachable and cannot be freed Fix this by using a temporary variable to hold the krealloc() result and only updating gchan->config when the allocation succeeds. Found via static analysis and code review.
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Meta Information
Published
2026-01-31
Last Modified
2026-06-02
Generated
2026-06-16
AI Q&A
2026-01-31
EPSS Evaluated
2026-06-15
NVD
CVE-2026-23026
Affected Vendors & Products
Showing 14 associated CPEs
Vendor Product Version / Range
linux linux_kernel 5.11
linux linux_kernel From 6.13 (inc) to 6.18.7 (exc)
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 5.16 (inc) to 6.1.162 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.122 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.67 (exc)
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 5.11.1 (inc) to 5.15.199 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's dmaengine Qualcomm gpi driver, specifically in the function gpi_peripheral_config(). When the function attempts to reallocate memory using krealloc(), if krealloc() fails and returns NULL, the code incorrectly assigns NULL directly to gchan->config. This causes the original memory reference to be lost and the memory cannot be freed, resulting in a memory leak. The fix involves using a temporary variable to hold the result of krealloc() and only updating gchan->config if the allocation succeeds.

Impact Analysis

This vulnerability can lead to a memory leak in the Linux kernel, which over time may cause increased memory usage and potentially degrade system performance or stability. In systems with limited memory or long uptime, this could result in resource exhaustion or crashes.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the memory leak in gpi_peripheral_config() has been fixed. The fix involves correcting the handling of krealloc() failure to prevent memory leaks. Applying the latest kernel patches or updates from your Linux distribution that address this issue is recommended.

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