{"cve":"CVE-2022-48728","nvd":{"published":"2024-06-20T12:15:11.253","modified":"2026-06-17T05:16:01.990","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nIB/hfi1: Fix AIP early init panic\n\nAn early failure in hfi1_ipoib_setup_rn() can lead to the following panic:\n\n  BUG: unable to handle kernel NULL pointer dereference at 00000000000001b0\n  PGD 0 P4D 0\n  Oops: 0002 [#1] SMP NOPTI\n  Workqueue: events work_for_cpu_fn\n  RIP: 0010:try_to_grab_pending+0x2b/0x140\n  Code: 1f 44 00 00 41 55 41 54 55 48 89 d5 53 48 89 fb 9c 58 0f 1f 44 00 00 48 89 c2 fa 66 0f 1f 44 00 00 48 89 55 00 40 84 f6 75 77 <f0> 48 0f ba 2b 00 72 09 31 c0 5b 5d 41 5c 41 5d c3 48 89 df e8 6c\n  RSP: 0018:ffffb6b3cf7cfa48 EFLAGS: 00010046\n  RAX: 0000000000000246 RBX: 00000000000001b0 RCX: 0000000000000000\n  RDX: 0000000000000246 RSI: 0000000000000000 RDI: 00000000000001b0\n  RBP: ffffb6b3cf7cfa70 R08: 0000000000000f09 R09: 0000000000000001\n  R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000\n  R13: ffffb6b3cf7cfa90 R14: ffffffff9b2fbfc0 R15: ffff8a4fdf244690\n  FS:  0000000000000000(0000) GS:ffff8a527f400000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00000000000001b0 CR3: 00000017e2410003 CR4: 00000000007706f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  PKRU: 55555554\n  Call Trace:\n   __cancel_work_timer+0x42/0x190\n   ? dev_printk_emit+0x4e/0x70\n   iowait_cancel_work+0x15/0x30 [hfi1]\n   hfi1_ipoib_txreq_deinit+0x5a/0x220 [hfi1]\n   ? dev_err+0x6c/0x90\n   hfi1_ipoib_netdev_dtor+0x15/0x30 [hfi1]\n   hfi1_ipoib_setup_rn+0x10e/0x150 [hfi1]\n   rdma_init_netdev+0x5a/0x80 [ib_core]\n   ? hfi1_ipoib_free_rdma_netdev+0x20/0x20 [hfi1]\n   ipoib_intf_init+0x6c/0x350 [ib_ipoib]\n   ipoib_intf_alloc+0x5c/0xc0 [ib_ipoib]\n   ipoib_add_one+0xbe/0x300 [ib_ipoib]\n   add_client_context+0x12c/0x1a0 [ib_core]\n   enable_device_and_get+0xdc/0x1d0 [ib_core]\n   ib_register_device+0x572/0x6b0 [ib_core]\n   rvt_register_device+0x11b/0x220 [rdmavt]\n   hfi1_register_ib_device+0x6b4/0x770 [hfi1]\n   do_init_one.isra.20+0x3e3/0x680 [hfi1]\n   local_pci_probe+0x41/0x90\n   work_for_cpu_fn+0x16/0x20\n   process_one_work+0x1a7/0x360\n   ? create_worker+0x1a0/0x1a0\n   worker_thread+0x1cf/0x390\n   ? create_worker+0x1a0/0x1a0\n   kthread+0x116/0x130\n   ? kthread_flush_work_fn+0x10/0x10\n   ret_from_fork+0x1f/0x40\n\nThe panic happens in hfi1_ipoib_txreq_deinit() because there is a NULL\nderef when hfi1_ipoib_netdev_dtor() is called in this error case.\n\nhfi1_ipoib_txreq_init() and hfi1_ipoib_rxq_init() are self unwinding so\nfix by adjusting the error paths accordingly.\n\nOther changes:\n- hfi1_ipoib_free_rdma_netdev() is deleted including the free_netdev()\n  since the netdev core code deletes calls free_netdev()\n- The switch to the accelerated entrances is moved to the success path.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/1899c3cad265c4583658aed5293d02e8af84276b","https://git.kernel.org/stable/c/4a9bd1e6780fc59f81466ec3489d5ad535a37190","https://git.kernel.org/stable/c/5f8f55b92edd621f056bdf09e572092849fabd83","https://git.kernel.org/stable/c/a3dd4d2682f2a796121609e5f3bbeb1243198c53","https://git.kernel.org/stable/c/1899c3cad265c4583658aed5293d02e8af84276b"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:52:00.836172422+00:00"},"epss":{"cve":"CVE-2022-48728","score":0.00235,"percentile":0.14552,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}