CVE-2026-53353

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> hsr: Remove WARN_ONCE() in hsr_addr_is_self().<br /> <br /> syzbot reported the warning [0] in hsr_addr_is_self(),<br /> whose assumption is simply wrong.<br /> <br /> hsr-&gt;self_node is cleared in hsr_del_self_node(), which<br /> is called from hsr_dellink().<br /> <br /> Since dev-&gt;rtnl_link_ops-&gt;dellink() is called before<br /> unregister_netdevice_many(), there is a window when<br /> user can find the device but without hsr-&gt;self_node.<br /> <br /> Let&amp;#39;s remove WARN_ONCE() in hsr_addr_is_self().<br /> <br /> [0]:<br /> HSR: No self node<br /> WARNING: net/hsr/hsr_framereg.c:39 at hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39, CPU#0: syz.4.16848/17220<br /> Modules linked in:<br /> CPU: 0 UID: 0 PID: 17220 Comm: syz.4.16848 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)}<br /> Tainted: [L]=SOFTLOCKUP<br /> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026<br /> RIP: 0010:hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39<br /> Code: 33 2f 41 0f b7 dd 89 ee 09 de 31 ff e8 c8 b4 c6 f6 09 dd 74 54 e8 0f b0 c6 f6 31 ed eb 53 e8 06 b0 c6 f6 48 8d 3d 2f 50 9c 04 48 0f b9 3a 31 ed eb 42 e8 c1 13 1f 00 89 c5 31 ff 89 c6 e8 96<br /> RSP: 0018:ffffc900041c70e0 EFLAGS: 00010283<br /> RAX: ffffffff8afdc6ca RBX: ffffffff8afdc4e6 RCX: 0000000000080000<br /> RDX: ffffc90010493000 RSI: 0000000000000948 RDI: ffffffff8f9a1700<br /> RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000<br /> R10: ffffc900041c71e8 R11: fffff52000838e3f R12: dffffc0000000000<br /> R13: ffff888041f9e3c0 R14: ffff888086ee3802 R15: 0000000000000000<br /> FS: 00007f6fe985d6c0(0000) GS:ffff888126176000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 00007f80bd437dac CR3: 0000000025096000 CR4: 00000000003526f0<br /> DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002<br /> DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br /> Call Trace:<br /> <br /> check_local_dest net/hsr/hsr_forward.c:592 [inline]<br /> fill_frame_info net/hsr/hsr_forward.c:728 [inline]<br /> hsr_forward_skb+0xa11/0x2a80 net/hsr/hsr_forward.c:739<br /> hsr_dev_xmit+0x253/0x370 net/hsr/hsr_device.c:236<br /> __netdev_start_xmit include/linux/netdevice.h:5368 [inline]<br /> netdev_start_xmit include/linux/netdevice.h:5377 [inline]<br /> xmit_one net/core/dev.c:3888 [inline]<br /> dev_hard_start_xmit+0x2df/0x860 net/core/dev.c:3904<br /> __dev_queue_xmit+0x1428/0x3900 net/core/dev.c:4870<br /> neigh_output include/net/neighbour.h:556 [inline]<br /> ip_finish_output2+0xcec/0x10b0 net/ipv4/ip_output.c:237<br /> ip_send_skb net/ipv4/ip_output.c:1510 [inline]<br /> ip_push_pending_frames+0x8b/0x110 net/ipv4/ip_output.c:1530<br /> raw_sendmsg+0x1547/0x1a50 net/ipv4/raw.c:659<br /> sock_sendmsg_nosec net/socket.c:787 [inline]<br /> __sock_sendmsg net/socket.c:802 [inline]<br /> ____sys_sendmsg+0x7da/0x9c0 net/socket.c:2698<br /> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752<br /> __sys_sendmsg net/socket.c:2784 [inline]<br /> __do_sys_sendmsg net/socket.c:2789 [inline]<br /> __se_sys_sendmsg net/socket.c:2787 [inline]<br /> __x64_sys_sendmsg+0x1c3/0x2a0 net/socket.c:2787<br /> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]<br /> do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94<br /> entry_SYSCALL_64_after_hwframe+0x77/0x7f<br /> RIP: 0033:0x7f6feb62ce59<br /> Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48<br /> RSP: 002b:00007f6fe985d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e<br /> RAX: ffffffffffffffda RBX: 00007f6feb8a6090 RCX: 00007f6feb62ce59<br /> RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004<br /> RBP: 00007f6feb6c2d6f R08: 0000000000000000 R09: 0000000000000000<br /> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000<br /> R13: 00007f6feb8a6128 R14: 00007f6feb8a6090 R15: 00007ffcf01cc488<br />