CVE-2026-46047
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Fix use-after-free in driver remove() In the remove callback, if a packet arrives after destroy_workqueue() is called, but before sock_release(), the qrtr_ns_data_ready() callback will try to queue the work, causing use-after-free issue. Fix this issue by saving the default 'sk_data_ready' callback during qrtr_ns_init() and use it to replace the qrtr_ns_data_ready() callback at the start of remove(). This ensures that even if a packet arrives after destroy_workqueue(), the work struct will not be dereferenced. Note that it is also required to ensure that the RX threads are completed before destroying the workqueue, because the threads could be using the qrtr_ns_data_ready() callback.
Affected versions
Linux kernel versions
5.7
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
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-2026-46047 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/0f313eb6a8f6dffa491373cf3afab979fa1c02f4
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PatchKernel patch commithttps://git.kernel.org/stable/c/2e127ceb1c415e246076d8e09e23e443a7a2038f
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PatchKernel patch commithttps://git.kernel.org/stable/c/4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167
Frequently asked questions
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What is CVE-2026-46047?
CVE-2026-46047 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.7 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46047 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-2026-46047?
Yes — CVE-2026-46047 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46047 actively exploited?
No — CVE-2026-46047 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.