CVE-2022-49670

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> linux/dim: Fix divide by 0 in RDMA DIM<br /> <br /> Fix a divide 0 error in rdma_dim_stats_compare() when prev-&gt;cpe_ratio ==<br /> 0.<br /> <br /> CallTrace:<br /> Hardware name: H3C R4900 G3/RS33M2C9S, BIOS 2.00.37P21 03/12/2020<br /> task: ffff880194b78000 task.stack: ffffc90006714000<br /> RIP: 0010:backport_rdma_dim+0x10e/0x240 [mlx_compat]<br /> RSP: 0018:ffff880c10e83ec0 EFLAGS: 00010202<br /> RAX: 0000000000002710 RBX: ffff88096cd7f780 RCX: 0000000000000064<br /> RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001<br /> RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000<br /> R10: 0000000000000000 R11: 0000000000000000 R12: 000000001d7c6c09<br /> R13: ffff88096cd7f780 R14: ffff880b174fe800 R15: 0000000000000000<br /> FS: 0000000000000000(0000) GS:ffff880c10e80000(0000)<br /> knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 00000000a0965b00 CR3: 000000000200a003 CR4: 00000000007606e0<br /> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br /> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400<br /> PKRU: 55555554<br /> Call Trace:<br /> <br /> ib_poll_handler+0x43/0x80 [ib_core]<br /> irq_poll_softirq+0xae/0x110<br /> __do_softirq+0xd1/0x28c<br /> irq_exit+0xde/0xf0<br /> do_IRQ+0x54/0xe0<br /> common_interrupt+0x8f/0x8f<br /> <br /> ? cpuidle_enter_state+0xd9/0x2a0<br /> ? cpuidle_enter_state+0xc7/0x2a0<br /> ? do_idle+0x170/0x1d0<br /> ? cpu_startup_entry+0x6f/0x80<br /> ? start_secondary+0x1b9/0x210<br /> ? secondary_startup_64+0xa5/0xb0<br /> Code: 0f 87 e1 00 00 00 8b 4c 24 14 44 8b 43 14 89 c8 4d 63 c8 44 29 c0 99 31 d0 29 d0 31 d2 48 98 48 8d 04 80 48 8d 04 80 48 c1 e0 02 f7 f1 48 83 f8 0a 0f 86 c1 00 00 00 44 39 c1 7f 10 48 89 df<br /> RIP: backport_rdma_dim+0x10e/0x240 [mlx_compat] RSP: ffff880c10e83ec0