CVE-2026-74302
Bluetooth: hci_core: Fix UAF in hci_unregister_dev()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
0d151a103775dd9645c78c97f77d6e2a5298d913 < 48c7ad6afcc58c2cda11fed39791708103b6a644 0d151a103775dd9645c78c97f77d6e2a5298d913 < a0fd1086a57b982f8c24ae4ab165c2af39fe1735 0d151a103775dd9645c78c97f77d6e2a5298d913 < 672d52d9412252e61b8de8d773ccdf5a277cf540 0d151a103775dd9645c78c97f77d6e2a5298d913 < 5edcc018fa6e80b2c478454a4a8229c23d67c181 48542881997e17b49dc16b93fe910e0cfcf7a9f9 9cfc84b1d464cc024286f42a090718f9067b80ed ddeda6ca5f218b668b560d90fc31ae469adbfd92 d2ce562a5aff1dcd0c50d9808ea825ef90da909f 96600c2e5ee8213dbab5df1617293d8e847bb4fa d6cbce18370641a21dd889e8613d8153df15eb39 3f939bd73fed12dddc2a32a76116c19ca47c7678 4.19.319 < 4.20 5.4.281 < 5.5 5.10.223 < 5.11 5.15.164 < 5.16 6.1.101 < 6.2 6.6.42 < 6.7 6.9.11 < 6.10
Linux / Linux
6.10
References
git.kernel.org: https://git.kernel.org/stable/c/48c7ad6afcc58c2cda11fed39791708103b6a644 git.kernel.org: https://git.kernel.org/stable/c/a0fd1086a57b982f8c24ae4ab165c2af39fe1735 git.kernel.org: https://git.kernel.org/stable/c/672d52d9412252e61b8de8d773ccdf5a277cf540 git.kernel.org: https://git.kernel.org/stable/c/5edcc018fa6e80b2c478454a4a8229c23d67c181