CVE-2026-46069
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup() The mwifiex_adapter_cleanup() function uses timer_delete() (non-synchronous) for the wakeup_timer before the adapter structure is freed. This is incorrect because timer_delete() does not wait for any running timer callback to complete. If the wakeup_timer callback (wakeup_timer_fn) is executing when mwifiex_adapter_cleanup() is called, the callback will continue to access adapter fields (adapter->hw_status, adapter->if_ops.card_reset, etc.) which may be freed by mwifiex_free_adapter() called later in the mwifiex_remove_card() path. Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.
Affected versions
Linux kernel versions
4.0
and later are affected. Fixed in
6.6.140,
6.12.86,
6.18.27,
7.0.4,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46069 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/030abbae49cf9fd1fba7aa08e15ec81efbeb78cf
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PatchKernel patch commithttps://git.kernel.org/stable/c/11869ce402d95519d49b25a2a97741f68d69d103
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PatchKernel patch commithttps://git.kernel.org/stable/c/4e179a60a60c0a5aea245e8e67768343c0f070b8
Frequently asked questions
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What is CVE-2026-46069?
CVE-2026-46069 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.0 onward and has been patched in 6.6.140, 6.12.86, 6.18.27 and others. CVE-2026-46069 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46069?
Yes — CVE-2026-46069 has been patched. Fixed versions include 6.6.140, 6.12.86, 6.18.27 and others. If you are running Linux kernel 4.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46069 actively exploited?
No — CVE-2026-46069 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.