CVE-2026-74302High· 7.8▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 0d151a103775dd9645c78c97f77d6e2a5298d913 < 48c7ad6afcc58c2cda11fed39791708103b6a644Linux >= 0d151a103775dd9645c78c97f77d6e2a5298d913 < a0fd1086a57b982f8c24ae4ab165c2af39fe1735Linux >= 0d151a103775dd9645c78c97f77d6e2a5298d913 < 672d52d9412252e61b8de8d773ccdf5a277cf540Linux >= 0d151a103775dd9645c78c97f77d6e2a5298d913 < 5edcc018fa6e80b2c478454a4a8229c23d67c181Linux 48542881997e17b49dc16b93fe910e0cfcf7a9f9Linux 9cfc84b1d464cc024286f42a090718f9067b80edLinux ddeda6ca5f218b668b560d90fc31ae469adbfd92Linux d2ce562a5aff1dcd0c50d9808ea825ef90da909fLinux 96600c2e5ee8213dbab5df1617293d8e847bb4faLinux d6cbce18370641a21dd889e8613d8153df15eb39Linux 3f939bd73fed12dddc2a32a76116c19ca47c7678Linux >= 4.19.319 < 4.20Linux >= 5.4.281 < 5.5Linux >= 5.10.223 < 5.11Linux >= 5.15.164 < 5.16Linux >= 6.1.101 < 6.2Linux >= 6.6.42 < 6.7Linux >= 6.9.11 < 6.10Linux 6.10Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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