CVE-2026-31499None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del() l2cap_conn_del() calls cancel_delayed_work_sync() for both info_timer and id_addr_timer while holding conn->lock. Ho…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · 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.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.09%
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del()
l2cap_conn_del() calls cancel_delayed_work_sync() for both info_timer and id_addr_timer while holding conn->lock. However, the work functions l2cap_info_timeout() and l2cap_conn_update_id_addr() both acquire conn->lock, creating a potential AB-BA deadlock if the work is already executing when l2cap_conn_del() takes the lock.
Move the work cancellations before acquiring conn->lock and use disable_delayed_work_sync() to additionally prevent the works from being rearmed after cancellation, consistent with the pattern used in hci_conn_del().
Linux >= f87271d21dd4ee83857ca11b94e7b4952749bbae < f7f35a4f7fd574f5889bb2e4b397e14cbb83f6daLinux >= ab4eedb790cae44313759b50fe47da285e2519d5 < 3f26ecbd9cde621dd94be7ef252c7210b965a5c7Linux >= ab4eedb790cae44313759b50fe47da285e2519d5 < d008460de352e534f6721de829b093368564ec66Linux >= ab4eedb790cae44313759b50fe47da285e2519d5 < 00fdebbbc557a2fc21321ff2eaa22fd70c078608Linux efc30877bd4bc85fefe98d80af60fafc86e5775eLinux 18ab6b6078fa8191ca30a3065d57bf35d5635761Linux >= 6.12.20 < 6.12.88Linux >= 6.6.84 < 6.7Linux >= 6.13.8 < 6.14Linux 6.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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