CVE-2026-74302Bluetooth: hci_core: Fix UAF in hci_unregister_dev()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0d151a103775dd9645c78c97f77d6e2a5298d913 before 48c7ad6afcc58c2cda11fed39791708103b6a644; from 0d151a103775dd9645c78c97f77d6e2a5298d913 before a0fd1086a57b982f8c24ae4ab165c2af39fe1735; from 0d151a103775dd9645c78c97f77d6e2a5298d913 before 672d52d9412252e61b8de8d773ccdf5a277cf540; from 0d151a103775dd9645c78c97f77d6e2a5298d913 before 5edcc018fa6e80b2c478454a4a8229c23d67c181; 48542881997e17b49dc16b93fe910e0cfcf7a9f9; 9cfc84b1d464cc024286f42a090718f9067b80ed; ddeda6ca5f218b668b560d90fc31ae469adbfd92; d2ce562a5aff1dcd0c50d9808ea825ef90da909f; and 10 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/48c7ad6afcc58c2cda11fed39791708103b6a644
- https://git.kernel.org/stable/c/a0fd1086a57b982f8c24ae4ab165c2af39fe1735
- https://git.kernel.org/stable/c/672d52d9412252e61b8de8d773ccdf5a277cf540
- https://git.kernel.org/stable/c/5edcc018fa6e80b2c478454a4a8229c23d67c181
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.