CVE-2023-53209
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-15

Last updated on: 2025-12-04

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: Fix possible NULL dereference In a call to mac80211_hwsim_select_tx_link() the sta pointer might be NULL, thus need to check that it is not NULL before accessing it.
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Meta Information
Published
2025-09-15
Last Modified
2025-12-04
Generated
2026-06-16
AI Q&A
2025-09-15
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53209
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel to 6.1.42 (exc)
linux linux_kernel From 6.2 (inc) to 6.4.7 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability is a potential NULL pointer dereference in the Linux kernel's mac80211_hwsim component. Specifically, in the function mac80211_hwsim_select_tx_link(), the 'sta' pointer might be NULL, and if not checked before use, it could lead to a NULL dereference error. The fix involves adding a check to ensure 'sta' is not NULL before accessing it.

Impact Analysis

If exploited, this vulnerability could cause the affected system to crash or behave unpredictably due to a NULL pointer dereference in the kernel's wireless simulation component. This could lead to denial of service or system instability.

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