CVE-2026-31647

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> idpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling<br /> <br /> Switch from using the completion&amp;#39;s raw spinlock to a local lock in the<br /> idpf_vc_xn struct. The conversion is safe because complete/_all() are<br /> called outside the lock and there is no reason to share the completion<br /> lock in the current logic. This avoids invalid wait context reported by<br /> the kernel due to the async handler taking BH spinlock:<br /> <br /> [ 805.726977] =============================<br /> [ 805.726991] [ BUG: Invalid wait context ]<br /> [ 805.727006] 7.0.0-rc2-net-devq-031026+ #28 Tainted: G S OE<br /> [ 805.727026] -----------------------------<br /> [ 805.727038] kworker/u261:0/572 is trying to lock:<br /> [ 805.727051] ff190da6a8dbb6a0 (&amp;vport_config-&gt;mac_filter_list_lock){+...}-{3:3}, at: idpf_mac_filter_async_handler+0xe9/0x260 [idpf]<br /> [ 805.727099] other info that might help us debug this:<br /> [ 805.727111] context-{5:5}<br /> [ 805.727119] 3 locks held by kworker/u261:0/572:<br /> [ 805.727132] #0: ff190da6db3e6148 ((wq_completion)idpf-0000:83:00.0-mbx){+.+.}-{0:0}, at: process_one_work+0x4b5/0x730<br /> [ 805.727163] #1: ff3c6f0a6131fe50 ((work_completion)(&amp;(&amp;adapter-&gt;mbx_task)-&gt;work)){+.+.}-{0:0}, at: process_one_work+0x1e5/0x730<br /> [ 805.727191] #2: ff190da765190020 (&amp;x-&gt;wait#34){+.+.}-{2:2}, at: idpf_recv_mb_msg+0xc8/0x710 [idpf]<br /> [ 805.727218] stack backtrace:<br /> ...<br /> [ 805.727238] Workqueue: idpf-0000:83:00.0-mbx idpf_mbx_task [idpf]<br /> [ 805.727247] Call Trace:<br /> [ 805.727249] <br /> [ 805.727251] dump_stack_lvl+0x77/0xb0<br /> [ 805.727259] __lock_acquire+0xb3b/0x2290<br /> [ 805.727268] ? __irq_work_queue_local+0x59/0x130<br /> [ 805.727275] lock_acquire+0xc6/0x2f0<br /> [ 805.727277] ? idpf_mac_filter_async_handler+0xe9/0x260 [idpf]<br /> [ 805.727284] ? _printk+0x5b/0x80<br /> [ 805.727290] _raw_spin_lock_bh+0x38/0x50<br /> [ 805.727298] ? idpf_mac_filter_async_handler+0xe9/0x260 [idpf]<br /> [ 805.727303] idpf_mac_filter_async_handler+0xe9/0x260 [idpf]<br /> [ 805.727310] idpf_recv_mb_msg+0x1c8/0x710 [idpf]<br /> [ 805.727317] process_one_work+0x226/0x730<br /> [ 805.727322] worker_thread+0x19e/0x340<br /> [ 805.727325] ? __pfx_worker_thread+0x10/0x10<br /> [ 805.727328] kthread+0xf4/0x130<br /> [ 805.727333] ? __pfx_kthread+0x10/0x10<br /> [ 805.727336] ret_from_fork+0x32c/0x410<br /> [ 805.727345] ? __pfx_kthread+0x10/0x10<br /> [ 805.727347] ret_from_fork_asm+0x1a/0x30<br /> [ 805.727354]