net/bnx2x: Prevent access to a freed page in page_pool

{
  "id": "8e00c1f147f2cb65838a3eec4067357b298488c0f86279a301f61b1a2d9d8b02",
  "url": "https://osv.dev/vulnerability/CVE-2024-26859",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net/bnx2x: Prevent access to a freed page in page_pool",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net/bnx2x: Prevent access to a freed page in page_pool Fix race condition leading to system crash during EEH error handling During EEH error recovery, the bnx2x driver's transmit timeout logic could cause a race condition when handling reset tasks. The bnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(), which ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload() SGEs are freed using bnx2x_free_rx_sge_range(). However, this could overlap with the EEH driver's attempt to reset the device using bnx2x_io_slot_reset(), which also tries to free SGEs. This race condition can result in system crashes due to accessing freed memory locations in bnx2x_free_rx_sge() 799 static inline void bnx2x_free_rx_sge(struct bnx2x *bp, 800 struct bnx2x_fastpath *fp, u16 index) 801 { 802 struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; 803 struct page *page = sw_buf->page; .... where sw_buf was set to NULL after the call to dma_unmap_page() by the preceding thread. EEH: Beginning: 'slot_reset' PCI 0011:01:00.0#10000: EEH: Invoking bnx2x->slot_reset() bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing... bnx2x 0011:01:00.0: enabling device (0140 -> 0142) bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --> driver unload Kernel attempted to read user page (0) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000000 Faulting instruction address: 0xc0080000025",
    "evidence": "osv:CVE-2024-26859",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "4.19.311",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.273",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.214",
            "evidence": "/affected/1/ranges"
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          {
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            "evidence": "/affected/1/ranges"
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          {
            "value": "6.1.83",
            "evidence": "/affected/1/ranges"
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            "value": "6.6.23",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-26859",
      "aliases": [
        "CVE-2024-26859"
      ],
      "affected": [
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                {
                  "fixed": "3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb"
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                  "fixed": "c51f8b6930db3f259b8820b589f2459d2df3fc68"
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            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26859.json"
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          "package": {
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            "ecosystem": "Linux"
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            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26859.json"
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      ],
      "modified": "2026-10-28T02:30:25.377789321Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-265688.html",
        "https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb",
        "https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec",
        "https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4",
        "https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9",
        "https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699",
        "https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598",
        "https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68",
        "https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c",
        "https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26859.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26859",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26859.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2024-26859",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 491752,
  "published_at": "2024-04-17T10:27:23.709+00:00"
}