https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 16:31:16 +0000 https://vulnerability.circl.lu/vuln/cve-2026-63976 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>Bluetooth: l2cap: clear chan-&gt;ident on ECRED reconfiguration success</p> <p>l2cap_ecred_reconf_rsp() returns early on success without clearing chan-&gt;ident. Every other L2CAP response handler (l2cap_ecred_conn_rsp, l2cap_le_connect_rsp, l2cap_config_rsp) clears chan-&gt;ident after a successful transaction to prevent the channel from matching subsequent responses with the recycled ident value.</p> <p>A remote attacker that completed a reconfiguration as the peer can replay a failure response with the stale ident, causing the kernel to match and destroy the already-established channel via l2cap_chan_del(chan, ECONNRESET).</p> <p>Clear chan-&gt;ident for all matching channels on success, and harden the failure path by using l2cap_chan_hold_unless_zero() consistent with other L2CAP handlers (l2cap_le_command_rej, __l2cap_get_chan_by_ident).</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>Bluetooth: l2cap: clear chan-&gt;ident on ECRED reconfiguration success</p> <p>l2cap_ecred_reconf_rsp() returns early on success without clearing chan-&gt;ident. Every other L2CAP response handler (l2cap_ecred_conn_rsp, l2cap_le_connect_rsp, l2cap_config_rsp) clears chan-&gt;ident after a successful transaction to prevent the channel from matching subsequent responses with the recycled ident value.</p> <p>A remote attacker that completed a reconfiguration as the peer can replay a failure response with the stale ident, causing the kernel to match and destroy the already-established channel via l2cap_chan_del(chan, ECONNRESET).</p> <p>Clear chan-&gt;ident for all matching channels on success, and harden the failure path by using l2cap_chan_hold_unless_zero() consistent with other L2CAP handlers (l2cap_le_command_rej, __l2cap_get_chan_by_ident).</p> https://vulnerability.circl.lu/vuln/cve-2026-63976