https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 13:39:48 +0000 https://vulnerability.circl.lu/vuln/cve-2026-23274 <p><strong>Affected:</strong> Linux, Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels</p> <p>IDLETIMER revision 0 rules reuse existing timers by label and always call mod_timer() on timer-&gt;timer.</p> <p>If the label was created first by revision 1 with XT_IDLETIMER_ALARM, the object uses alarm timer semantics and timer-&gt;timer is never initialized. Reusing that object from revision 0 causes mod_timer() on an uninitialized timer_list, triggering debugobjects warnings and possible panic when panic_on_warn=1.</p> <p>Fix this by rejecting revision 0 rule insertion when an existing timer with the same label is of ALARM type.</p> <p><strong>Affected:</strong> Linux, Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels</p> <p>IDLETIMER revision 0 rules reuse existing timers by label and always call mod_timer() on timer-&gt;timer.</p> <p>If the label was created first by revision 1 with XT_IDLETIMER_ALARM, the object uses alarm timer semantics and timer-&gt;timer is never initialized. Reusing that object from revision 0 causes mod_timer() on an uninitialized timer_list, triggering debugobjects warnings and possible panic when panic_on_warn=1.</p> <p>Fix this by rejecting revision 0 rule insertion when an existing timer with the same label is of ALARM type.</p> https://vulnerability.circl.lu/vuln/cve-2026-23274