{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-26859",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-26859"
  ],
  "published": "2024-04-17T10:29:01Z",
  "summary": "net/bnx2x: Prevent access to a freed page in page_pool",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/bnx2x: Prevent access to a freed page in page_pool\n\nFix race condition leading to system crash during EEH error handling\n\nDuring EEH error recovery, the bnx2x driver's transmit timeout logic\ncould cause a race condition when handling reset tasks. The\nbnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(),\nwhich ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload()\nSGEs are freed using bnx2x_free_rx_sge_range(). However, this could\noverlap with the EEH driver's attempt to reset the device using\nbnx2x_io_slot_reset(), which also tries to free SGEs. This race\ncondition can result in system crashes due to accessing freed memory\nlocations in bnx2x_free_rx_sge()\n\n799  static inline void bnx2x_free_rx_sge(struct bnx2x *bp,\n800\t\t\t\tstruct bnx2x_fastpath *fp, u16 index)\n801  {\n802\tstruct sw_rx_page *sw_buf = &fp->rx_page_ring[index];\n803     struct page *page = sw_buf->page;\n....\nwhere sw_buf was set to NULL after the call to dma_unmap_page()\nby the preceding thread.\n\n    EEH: Beginning: 'slot_reset'\n    PCI 0011:01:00.0#10000: EEH: Invoking bnx2x->slot_reset()\n    bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing...\n    bnx2x 0011:01:00.0: enabling device (0140 -> 0142)\n    bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --> driver unload\n    Kernel attempted to read user page (0) - exploit attempt? (uid: 0)\n    BUG: Kernel NULL pointer dereference on read at 0x00000000\n    Faulting instruction address: 0xc0080000025065fc\n    Oops: Kernel access of bad area, sig: 11 [#1]\n    .....\n    Call Trace:\n    [c000000003c67a20] [c00800000250658c] bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable)\n    [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0\n    [c000000003c67b60] [c000000000052130] eeh_pe_report+0x180/0x550\n    [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60\n    [c000000003c67d50] [c000000000053a84] eeh_event_handler+0xf4/0x170\n    [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0\n    [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64\n\nTo solve this issue, we need to verify page pool allocations before\nfreeing.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.83",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-26859"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}