CVE-2022-50533
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-03-17

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mlme: fix null-ptr deref on failed assoc If association to an AP without a link 0 fails, then we crash in tracing because it assumes that either ap_mld_addr or link 0 BSS is valid, since we clear sdata->vif.valid_links and then don't add the ap_mld_addr to the struct. Since we clear also sdata->vif.cfg.ap_addr, keep a local copy of it and assign it earlier, before clearing valid_links, to fix this.
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Meta Information
Published
2025-10-07
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2025-10-07
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50533
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
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 null-pointer dereference in the Linux kernel's wifi mac80211 mlme component. It occurs when association to an access point (AP) without a link 0 fails. The system crashes because it incorrectly assumes that either the ap_mld_addr or link 0 BSS is valid, but these are not properly set due to clearing of valid_links and ap_addr without preserving necessary values. The fix involves keeping a local copy of ap_addr and assigning it before clearing valid_links to prevent the crash.

Impact Analysis

This vulnerability can cause the Linux kernel to crash during wifi association failures, leading to system instability or denial of service. This could disrupt network connectivity and affect the availability of systems relying on wifi connections.

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