https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 03:07:17 +0000 https://vulnerability.circl.lu/vuln/cve-2026-74536 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>Bluetooth: ISO: fix leaking sk after socket release</p> <p>iso_sock_kill() tests !sock_flag(sk, SOCK_ZAPPED) || sk-&gt;sk_socket || sock_flag(sk, SOCK_DEAD) for early return, but this is always true since sock_orphan(sk) sets SOCK_DEAD, so the sk reference released by socket always leaks, iso_sock_destruct is never called.</p> <p>The socket reference also leaks when __iso_sock_close() does not set SOCK_ZAPPED, since iso_conn_del() does not call iso_sock_kill() after zapping.</p> <p>Fix by replacing SOCK_DEAD by BT_SK_KILLED flag that is not used for something else, and lock_sock to ensure iso_sock_kill() puts sk only after socket release only once. Release and iso_conn_del may run concurrently. Call iso_sock_kill() from iso_conn_del() to clean sk up after zapping.</p> <p>Remove call to iso_sock_kill() from iso_sock_close(), as it&#39;s generally no-op there.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>Bluetooth: ISO: fix leaking sk after socket release</p> <p>iso_sock_kill() tests !sock_flag(sk, SOCK_ZAPPED) || sk-&gt;sk_socket || sock_flag(sk, SOCK_DEAD) for early return, but this is always true since sock_orphan(sk) sets SOCK_DEAD, so the sk reference released by socket always leaks, iso_sock_destruct is never called.</p> <p>The socket reference also leaks when __iso_sock_close() does not set SOCK_ZAPPED, since iso_conn_del() does not call iso_sock_kill() after zapping.</p> <p>Fix by replacing SOCK_DEAD by BT_SK_KILLED flag that is not used for something else, and lock_sock to ensure iso_sock_kill() puts sk only after socket release only once. Release and iso_conn_del may run concurrently. Call iso_sock_kill() from iso_conn_del() to clean sk up after zapping.</p> <p>Remove call to iso_sock_kill() from iso_sock_close(), as it&#39;s generally no-op there.</p> https://vulnerability.circl.lu/vuln/cve-2026-74536