https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 01:29:31 +0000 https://vulnerability.circl.lu/vuln/cve-2026-74535 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>Bluetooth: ISO: avoid deadlocks in iso_sock_timeout</p> <p>iso_sock_timeout() takes lock_sock, so sync disabling the timer while holding that lock may deadlock.</p> <p>iso_sock_timeout() may also run concurrently with iso_conn_del(), which leads to UAF</p> <p>[Task 1] [Task hdev-&gt;workqueue] iso_sock_timeout iso_conn_del iso_conn_hold_unless_zero iso_chan_del `------------&gt; iso_conn_put caller frees hcon iso_conn_put iso_conn_free conn-&gt;hcon-&gt;iso_data = NULL; /* UAF */</p> <p>Fix the deadlock by removing the disable from the lock_sock sections. Move the timer from iso_conn to iso_pinfo to decouple it from iso_conn which may need to be freed in lock_sock section. Convert some of the clear_timer to disable_timer.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>Bluetooth: ISO: avoid deadlocks in iso_sock_timeout</p> <p>iso_sock_timeout() takes lock_sock, so sync disabling the timer while holding that lock may deadlock.</p> <p>iso_sock_timeout() may also run concurrently with iso_conn_del(), which leads to UAF</p> <p>[Task 1] [Task hdev-&gt;workqueue] iso_sock_timeout iso_conn_del iso_conn_hold_unless_zero iso_chan_del `------------&gt; iso_conn_put caller frees hcon iso_conn_put iso_conn_free conn-&gt;hcon-&gt;iso_data = NULL; /* UAF */</p> <p>Fix the deadlock by removing the disable from the lock_sock sections. Move the timer from iso_conn to iso_pinfo to decouple it from iso_conn which may need to be freed in lock_sock section. Convert some of the clear_timer to disable_timer.</p> https://vulnerability.circl.lu/vuln/cve-2026-74535