{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-40032",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-40032"
  ],
  "published": "2025-10-28T11:50:45Z",
  "summary": "PCI: endpoint: pci-epf-test: Add NULL check for DMA channels before release",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-test: Add NULL check for DMA channels before release\n\nThe fields dma_chan_tx and dma_chan_rx of the struct pci_epf_test can be\nNULL even after EPF initialization. Then it is prudent to check that\nthey have non-NULL values before releasing the channels. Add the checks\nin pci_epf_test_clean_dma_chan().\n\nWithout the checks, NULL pointer dereferences happen and they can lead\nto a kernel panic in some cases:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050\n  Call trace:\n   dma_release_channel+0x2c/0x120 (P)\n   pci_epf_test_epc_deinit+0x94/0xc0 [pci_epf_test]\n   pci_epc_deinit_notify+0x74/0xc0\n   tegra_pcie_ep_pex_rst_irq+0x250/0x5d8\n   irq_thread_fn+0x34/0xb8\n   irq_thread+0x18c/0x2e8\n   kthread+0x14c/0x210\n   ret_from_fork+0x10/0x20\n\n[mani: trimmed the stack trace]",
  "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": "6.1.157",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40032"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6411f840a9b5c47c00ca8e004733de232553870d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0c5ce6b6ccc22d486cc7239ed908cb0ae5363a7b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fb54ffd60064c4e5139a3eb216e877b1acae1c8b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/57f7fb0d1ac28540c0f6405c829bb9c3b89d8dba"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/85afa9ea122dd9d4a2ead104a951d318975dcd25"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}