CVE-2026-43242
Analyzed Analyzed - Analysis Complete
Memory Leak in Linux Kernel socinfo Driver

Publication date: 2026-05-06

Last updated on: 2026-05-11

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: soc: ti: k3-socinfo: Fix regmap leak on probe failure The mmio regmap allocated during probe is never freed. Switch to using the device managed allocator so that the regmap is released on probe failures (e.g. probe deferral) and on driver unbind.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-11
Generated
2026-06-16
AI Q&A
2026-05-07
EPSS Evaluated
2026-06-14
NVD
CVE-2026-43242
EUVD
EUVD-2026-27803
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.19 (inc) to 6.19.6 (exc)
linux linux_kernel From 5.10.238 (inc) to 5.10.252 (exc)
linux linux_kernel From 5.15.185 (inc) to 5.15.202 (exc)
linux linux_kernel From 6.1.141 (inc) to 6.1.165 (exc)
linux linux_kernel From 6.12.31 (inc) to 6.12.75 (exc)
linux linux_kernel From 6.14.9 (inc) to 6.18.16 (exc)
linux linux_kernel From 6.6.93 (inc) to 6.6.128 (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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Mitigation Strategies

The vulnerability involves a regmap memory leak in the ti k3-socinfo driver during probe failures. To mitigate this issue, update the Linux kernel to a version where this vulnerability is fixed, which includes switching to the device managed allocator for regmap to ensure proper cleanup on probe failure and driver unbind.

Executive Summary

This vulnerability is related to the Linux kernel, specifically in the soc: ti: k3-socinfo component. During the probe process, a memory-mapped I/O (mmio) regmap is allocated but never freed if the probe fails. This causes a resource leak because the allocated regmap remains in memory instead of being released.

The fix involves switching to a device-managed allocator that automatically releases the regmap on probe failures (such as probe deferral) and when the driver is unbound, preventing the leak.

Impact Analysis

This vulnerability can lead to resource leaks in the Linux kernel, specifically memory leaks related to the regmap allocation during device probing. Over time, this could cause increased memory usage and potentially degrade system performance or stability if the leaked resources accumulate.

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