CVE-2025-39893
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-12-12

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: spi: spi-qpic-snand: unregister ECC engine on probe error and device remove The on-host hardware ECC engine remains registered both when the spi_register_controller() function returns with an error and also on device removal. Change the qcom_spi_probe() function to unregister the engine on the error path, and add the missing unregistering call to qcom_spi_remove() to avoid possible use-after-free issues.
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Meta Information
Published
2025-10-01
Last Modified
2025-12-12
Generated
2026-06-16
AI Q&A
2025-10-01
EPSS Evaluated
2026-06-15
NVD
CVE-2025-39893
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.15 (inc) to 6.16.6 (exc)
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17
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 involves the Linux kernel's spi-qpic-snand driver where the on-host hardware ECC engine is not properly unregistered when an error occurs during the spi_register_controller() function or when the device is removed. This improper handling can lead to use-after-free issues because the ECC engine remains registered even though it should have been unregistered on errors or device removal.

Impact Analysis

The vulnerability can lead to use-after-free issues in the Linux kernel, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges if they can exploit the improper handling of the ECC engine registration.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the spi-qpic-snand ECC engine unregistering issue. This fix ensures that the ECC engine is properly unregistered on probe errors and device removal, preventing possible use-after-free issues.

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