CVE-2026-74302
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix UAF in hci_unregister_dev() hci_unregister_dev() does not disable cmd_timer and ncmd_timer before the hci_dev structure is freed. If a timeout fires during device teardown, the callback dereferences freed memory (including the hdev->reset function pointer), leading to a use-after-free. Add disable_delayed_work_sync() calls alongside the existing disable_work_sync() calls to ensure both timers are fully quiesced before teardown proceeds.
Affected versions
Linux kernel versions
4.19.319,
5.4.281,
5.10.223,
5.15.164,
6.1.101,
6.6.42,
6.9.11,
6.10
and later are affected. Fixed in
6.12.97,
6.18.40,
7.1.5,
7.2-rc1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-74302?
CVE-2026-74302 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19.319 onward and has been patched in 6.12.97, 6.18.40, 7.1.5 and others. CVE-2026-74302 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-2026-74302?
Yes. CVE-2026-74302 has been patched. Fixed versions include 6.12.97, 6.18.40, 7.1.5 and others. If you are running Linux kernel 4.19.319 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74302 actively exploited?
No. CVE-2026-74302 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.