{
  "cveId": "CVE-2022-49703",
  "url": "https://patchblox.com/security/cve/CVE-2022-49703",
  "summary": "CVE-2022-49703 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49703, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  scsi: ibmvfc: Store vhost pointer during subcrq...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  scsi: ibmvfc: Store vhost pointer during subcrq allocation  Currently the back pointer from a queue to the vhost adapter isn\u0027t set until after subcrq interrupt registration. The value is available when a queue is first allocated and can/should be also set for primary and async queues as well as subcrqs.  This fixes a crash observed during kexec/kdump on Power 9 with legacy XICS interrupt controller where a pending subcrq interrupt from the previous kernel can be replayed immediately upon IRQ registration resulting in dereference of a garbage backpointer in ibmvfc_interrupt_scsi().  Kernel attempted to read user page (58) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000058 Faulting instruction address: 0xc008000003216a08 Oops: Kernel access of bad area, sig: 11 [#1] ... NIP [c008000003216a08] ibmvfc_interrupt_scsi\u002B0x40/0xb0 [ibmvfc] LR [c0000000082079e8] __handle_irq_event_percpu\u002B0x98/0x270 Call Trace: [c000000047fa3d80] [c0000000123e6180] 0xc0000000123e6180 (unreliable) [c000000047fa3df0] [c0000000082079e8] __handle_irq_event_percpu\u002B0x98/0x270 [c000000047fa3ea0] [c000000008207d18] handle_irq_event\u002B0x98/0x188 [c000000047fa3ef0] [c00000000820f564] handle_fasteoi_irq\u002B0xc4/0x310 [c000000047fa3f40] [c000000008205c60] generic_handle_irq\u002B0x50/0x80 [c000000047fa3f60] [c000000008015c40] __do_irq\u002B0x70/0x1a0 [c000000047fa3f90] [c000000008016d7c] __do_IRQ\u002B0x9c/0x130 [c000000014622f60] [0000000020000000] 0x20000000 [c000000014622ff0] [c000000008016e50] do_IRQ\u002B0x40/0xa0 [c000000014623020] [c000000008017044] replay_soft_interrupts\u002B0x194/0x2f0 [c000000014623210] [c0000000080172a8] arch_local_irq_restore\u002B0x108/0x170 [c000000014623240] [c000000008eb1008] _raw_spin_unlock_irqrestore\u002B0x58/0xb0 [c000000014623270] [c00000000820b12c] __setup_irq\u002B0x49c/0x9f0 [c000000014623310] [c00000000820b7c0] request_threaded_irq\u002B0x140/0x230 [c000000014623380] [c008000003212a50] ibmvfc_register_scsi_channel\u002B0x1e8/0x2f0 [ibmvfc] [c000000014623450] [c008000003213d1c] ibmvfc_init_sub_crqs\u002B0xc4/0x1f0 [ibmvfc] [c0000000146234d0] [c0080000032145a8] ibmvfc_reset_crq\u002B0x150/0x210 [ibmvfc] [c000000014623550] [c0080000032147c8] ibmvfc_init_crq\u002B0x160/0x280 [ibmvfc] [c0000000146235f0] [c00800000321a9cc] ibmvfc_probe\u002B0x2a4/0x530 [ibmvfc]",
  "published": "2025-02-26T07:01:45Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00265,
  "epssPercentile": 0.18553,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.18.14-1",
      "fix": "DEBIAN-CVE-2022-49703",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49703",
      "released": "2025-02-26T07:01:45Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.18.14-1",
      "fix": "DEBIAN-CVE-2022-49703",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49703",
      "released": "2025-02-26T07:01:45Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.18.14-1",
      "fix": "DEBIAN-CVE-2022-49703",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49703",
      "released": "2025-02-26T07:01:45Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}