CVE-2022-48758

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()<br /> <br /> The bnx2fc_destroy() functions are removing the interface before calling<br /> destroy_work. This results multiple WARNings from sysfs_remove_group() as<br /> the controller rport device attributes are removed too early.<br /> <br /> Replace the fcoe_port&amp;#39;s destroy_work queue. It&amp;#39;s not needed.<br /> <br /> The problem is easily reproducible with the following steps.<br /> <br /> Example:<br /> <br /> $ dmesg -w &amp;<br /> $ systemctl enable --now fcoe<br /> $ fipvlan -s -c ens2f1<br /> $ fcoeadm -d ens2f1.802<br /> [ 583.464488] host2: libfc: Link down on port (7500a1)<br /> [ 583.472651] bnx2fc: 7500a1 - rport not created Yet!!<br /> [ 583.490468] ------------[ cut here ]------------<br /> [ 583.538725] sysfs group &amp;#39;power&amp;#39; not found for kobject &amp;#39;rport-2:0-0&amp;#39;<br /> [ 583.568814] WARNING: CPU: 3 PID: 192 at fs/sysfs/group.c:279 sysfs_remove_group+0x6f/0x80<br /> [ 583.607130] Modules linked in: dm_service_time 8021q garp mrp stp llc bnx2fc cnic uio rpcsec_gss_krb5 auth_rpcgss nfsv4 ...<br /> [ 583.942994] CPU: 3 PID: 192 Comm: kworker/3:2 Kdump: loaded Not tainted 5.14.0-39.el9.x86_64 #1<br /> [ 583.984105] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013<br /> [ 584.016535] Workqueue: fc_wq_2 fc_rport_final_delete [scsi_transport_fc]<br /> [ 584.050691] RIP: 0010:sysfs_remove_group+0x6f/0x80<br /> [ 584.074725] Code: ff 5b 48 89 ef 5d 41 5c e9 ee c0 ff ff 48 89 ef e8 f6 b8 ff ff eb d1 49 8b 14 24 48 8b 33 48 c7 c7 ...<br /> [ 584.162586] RSP: 0018:ffffb567c15afdc0 EFLAGS: 00010282<br /> [ 584.188225] RAX: 0000000000000000 RBX: ffffffff8eec4220 RCX: 0000000000000000<br /> [ 584.221053] RDX: ffff8c1586ce84c0 RSI: ffff8c1586cd7cc0 RDI: ffff8c1586cd7cc0<br /> [ 584.255089] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb567c15afc00<br /> [ 584.287954] R10: ffffb567c15afbf8 R11: ffffffff8fbe7f28 R12: ffff8c1486326400<br /> [ 584.322356] R13: ffff8c1486326480 R14: ffff8c1483a4a000 R15: 0000000000000004<br /> [ 584.355379] FS: 0000000000000000(0000) GS:ffff8c1586cc0000(0000) knlGS:0000000000000000<br /> [ 584.394419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> [ 584.421123] CR2: 00007fe95a6f7840 CR3: 0000000107674002 CR4: 00000000000606e0<br /> [ 584.454888] Call Trace:<br /> [ 584.466108] device_del+0xb2/0x3e0<br /> [ 584.481701] device_unregister+0x13/0x60<br /> [ 584.501306] bsg_unregister_queue+0x5b/0x80<br /> [ 584.522029] bsg_remove_queue+0x1c/0x40<br /> [ 584.541884] fc_rport_final_delete+0xf3/0x1d0 [scsi_transport_fc]<br /> [ 584.573823] process_one_work+0x1e3/0x3b0<br /> [ 584.592396] worker_thread+0x50/0x3b0<br /> [ 584.609256] ? rescuer_thread+0x370/0x370<br /> [ 584.628877] kthread+0x149/0x170<br /> [ 584.643673] ? set_kthread_struct+0x40/0x40<br /> [ 584.662909] ret_from_fork+0x22/0x30<br /> [ 584.680002] ---[ end trace 53575ecefa942ece ]---