https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 24 Oct 2026 15:07:46 +0000 https://db.gcve.eu/vuln/cve-2026-98881 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>net: bridge: remove stale rcu_barrier() in br_multicast_dev_del()</p> <p>This rcu_barrier() came from a time call_rcu() calls were used in net/bridge/br_multicast.c.</p> <p>Now kfree_rcu() is there, we can remove this problematic rcu_barrier() which causes extreme RTNL pressure in many syzbot reports.</p> <p>INFO: task syz-executor:77945 is blocked on a mutex likely owned by task kworker/u1024:5:36537. task:kworker/u1024:5 state:D stack:24616 pid:36537 tgid:36537 ppid:2 task_flags:0x4208060 flags:0x00080000 last_sleep:612797637337 Workqueue: netns cleanup_net Call Trace: &lt;TASK&gt; [&lt;ffffffff81914eaa&gt;] context_switch+0xf2a/0x1730 kernel/sched/core.c:6483 [&lt;ffffffff81201143&gt;] __schedule+0x1133/0x43a0 kernel/sched/core.c:8411 [&lt;ffffffff8120446b&gt;] __schedule_loop kernel/sched/core.c:8514 [inline] [&lt;ffffffff8120446b&gt;] schedule+0xab/0x260 kernel/sched/core.c:8529 [&lt;ffffffff8121a093&gt;] schedule_timeout+0xc3/0x2b0 kernel/time/sleep_timeout.c:75 [&lt;ffffffff81205347&gt;] do_wait_for_common kernel/sched/completion.c:100 [inline] [&lt;ffffffff81205347&gt;] __wait_for_common kernel/sched/completion.c:121 [inline] [&lt;ffffffff81205347&gt;] wait_for_common kernel/sched/completion.c:132 [inline] [&lt;ffffffff81205347&gt;] wait_for_completion+0x2c7/0x5d0 kernel/sched/completion.c:153 [&lt;ffffffff81b8f27f&gt;] rcu_barrier+0x49f/0x620 kernel/rcu/tree.c:3888 [&lt;ffffffff860091b3&gt;] br_multicast_dev_del+0x303/0x350 net/bridge/br_multicast.c:4459 [&lt;…</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>net: bridge: remove stale rcu_barrier() in br_multicast_dev_del()</p> <p>This rcu_barrier() came from a time call_rcu() calls were used in net/bridge/br_multicast.c.</p> <p>Now kfree_rcu() is there, we can remove this problematic rcu_barrier() which causes extreme RTNL pressure in many syzbot reports.</p> <p>INFO: task syz-executor:77945 is blocked on a mutex likely owned by task kworker/u1024:5:36537. task:kworker/u1024:5 state:D stack:24616 pid:36537 tgid:36537 ppid:2 task_flags:0x4208060 flags:0x00080000 last_sleep:612797637337 Workqueue: netns cleanup_net Call Trace: &lt;TASK&gt; [&lt;ffffffff81914eaa&gt;] context_switch+0xf2a/0x1730 kernel/sched/core.c:6483 [&lt;ffffffff81201143&gt;] __schedule+0x1133/0x43a0 kernel/sched/core.c:8411 [&lt;ffffffff8120446b&gt;] __schedule_loop kernel/sched/core.c:8514 [inline] [&lt;ffffffff8120446b&gt;] schedule+0xab/0x260 kernel/sched/core.c:8529 [&lt;ffffffff8121a093&gt;] schedule_timeout+0xc3/0x2b0 kernel/time/sleep_timeout.c:75 [&lt;ffffffff81205347&gt;] do_wait_for_common kernel/sched/completion.c:100 [inline] [&lt;ffffffff81205347&gt;] __wait_for_common kernel/sched/completion.c:121 [inline] [&lt;ffffffff81205347&gt;] wait_for_common kernel/sched/completion.c:132 [inline] [&lt;ffffffff81205347&gt;] wait_for_completion+0x2c7/0x5d0 kernel/sched/completion.c:153 [&lt;ffffffff81b8f27f&gt;] rcu_barrier+0x49f/0x620 kernel/rcu/tree.c:3888 [&lt;ffffffff860091b3&gt;] br_multicast_dev_del+0x303/0x350 net/bridge/br_multicast.c:4459 [&lt;…</p> https://db.gcve.eu/vuln/cve-2026-98881