https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 01:01:37 +0000 https://vulnerability.circl.lu/vuln/cve-2026-43091 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>xfrm: Wait for RCU readers during policy netns exit</p> <p>xfrm_policy_fini() frees the policy_bydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their read-side critical sections first.</p> <p>The policy_bydst tables are published via rcu_assign_pointer() and are looked up through rcu_dereference_check(), so netns teardown must also wait for an RCU grace period before freeing the table memory.</p> <p>Fix this by adding synchronize_rcu() before freeing the policy hash tables.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>xfrm: Wait for RCU readers during policy netns exit</p> <p>xfrm_policy_fini() frees the policy_bydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their read-side critical sections first.</p> <p>The policy_bydst tables are published via rcu_assign_pointer() and are looked up through rcu_dereference_check(), so netns teardown must also wait for an RCU grace period before freeing the table memory.</p> <p>Fix this by adding synchronize_rcu() before freeing the policy hash tables.</p> https://vulnerability.circl.lu/vuln/cve-2026-43091