PT-2025-41102 · Linux+1 · Linux Kernel+1
Published
2023-06-30
·
Updated
2025-12-04
·
CVE-2023-53658
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the bcm-qspi driver. If neither a "hif mspi" nor "mspi" resource is present, the driver exits probe prematurely but still indicates success. This leads to a potential null pointer dereference during removal, specifically when
platform get drvdata() returns NULL and is subsequently dereferenced during unregistration of the SPI master. The issue is addressed by unconditionally calling devm ioremap resource(), which can handle a NULL resource and return an appropriate error pointer. The initial incorrect return value was a result of a previous fix that did not introduce the issue but made it more apparent.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
NULL Pointer Dereference
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Related Identifiers
Affected Products
Linux Kernel
Suse