CVE-2022-49695

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> igb: fix a use-after-free issue in igb_clean_tx_ring<br /> <br /> Fix the following use-after-free bug in igb_clean_tx_ring routine when<br /> the NIC is running in XDP mode. The issue can be triggered redirecting<br /> traffic into the igb NIC and then closing the device while the traffic<br /> is flowing.<br /> <br /> [ 73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9<br /> [ 73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017<br /> [ 73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0<br /> [ 73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282<br /> [ 73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000<br /> [ 73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0<br /> [ 73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058<br /> [ 73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090<br /> [ 73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000<br /> [ 73.404806] FS: 00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000<br /> [ 73.413129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> [ 73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0<br /> [ 73.426565] Call Trace:<br /> [ 73.429087] <br /> [ 73.431314] igb_clean_tx_ring+0x43/0x140 [igb]<br /> [ 73.436002] igb_down+0x1d7/0x220 [igb]<br /> [ 73.439974] __igb_close+0x3c/0x120 [igb]<br /> [ 73.444118] igb_xdp+0x10c/0x150 [igb]<br /> [ 73.447983] ? igb_pci_sriov_configure+0x70/0x70 [igb]<br /> [ 73.453362] dev_xdp_install+0xda/0x110<br /> [ 73.457371] dev_xdp_attach+0x1da/0x550<br /> [ 73.461369] do_setlink+0xfd0/0x10f0<br /> [ 73.465166] ? __nla_validate_parse+0x89/0xc70<br /> [ 73.469714] rtnl_setlink+0x11a/0x1e0<br /> [ 73.473547] rtnetlink_rcv_msg+0x145/0x3d0<br /> [ 73.477709] ? rtnl_calcit.isra.0+0x130/0x130<br /> [ 73.482258] netlink_rcv_skb+0x8d/0x110<br /> [ 73.486229] netlink_unicast+0x230/0x340<br /> [ 73.490317] netlink_sendmsg+0x215/0x470<br /> [ 73.494395] __sys_sendto+0x179/0x190<br /> [ 73.498268] ? move_addr_to_user+0x37/0x70<br /> [ 73.502547] ? __sys_getsockname+0x84/0xe0<br /> [ 73.506853] ? netlink_setsockopt+0x1c1/0x4a0<br /> [ 73.511349] ? __sys_setsockopt+0xc8/0x1d0<br /> [ 73.515636] __x64_sys_sendto+0x20/0x30<br /> [ 73.519603] do_syscall_64+0x3b/0x80<br /> [ 73.523399] entry_SYSCALL_64_after_hwframe+0x44/0xae<br /> [ 73.528712] RIP: 0033:0x7ff38d41f20c<br /> [ 73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c<br /> [ 73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c<br /> [ 73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003<br /> [ 73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000<br /> [ 73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0<br /> [ 73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30<br /> [ 73.596545] <br /> [ 73.598842] ---[ end trace 0000000000000000 ]---