CVE-2025-40283
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF There is a KASAN: slab-use-after-free read in btusb_disconnect(). Calling "usb_driver_release_interface(&btusb_driver, data->intf)" will free the btusb data associated with the interface. The same data is then used later in the function, hence the UAF. Fix by moving the accesses to btusb data to before the data is free'd.
Affected versions
Linux kernel versions
4.11
and later are affected. Fixed in
5.4.302,
5.10.247,
5.15.197,
6.1.159,
6.6.117,
6.12.59,
6.17.9,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40283 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/1c28c1e1522c773a94e26950ffb145e88cd9834b
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PatchKernel patch commithttps://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550
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PatchKernel patch commithttps://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8
Frequently asked questions
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What is CVE-2025-40283?
CVE-2025-40283 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.11 onward and has been patched in 5.4.302, 5.10.247, 5.15.197 and others. CVE-2025-40283 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-2025-40283?
Yes — CVE-2025-40283 has been patched. Fixed versions include 5.4.302, 5.10.247, 5.15.197 and others. If you are running Linux kernel 4.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40283 actively exploited?
No — CVE-2025-40283 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.