{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-63798",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-63798"
  ],
  "published": "2026-07-19T12:02:32Z",
  "summary": "irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove\n\nThe driver allocates domain generic chips using\nirq_alloc_domain_generic_chips() during probe and sets up chained\nhandlers using irq_set_chained_handler_and_data(). However, on driver\nremoval, the generic chips are not freed and the chained handlers are\nnot removed.\n\nThe generic chips remain on the global gc_list and may later be accessed by\ngeneric interrupt chip suspend, resume, or shutdown callbacks after the\ndriver has been removed, potentially resulting in a use-after-free and\nkernel crash.\n\nThe chained handlers that were installed in probe for peripheral and\nsyswake interrupts are also left dangling, which can lead to spurious\ninterrupts accessing freed memory.\n\nFix these issues by:\n\n  - Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the\n    core code automatically removes generic chips when irq_domain_remove()\n    is called\n\n  - Clearing all chained handlers with NULL in pdc_intc_remove()",
  "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": "6.1.177",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-63798"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8176773dfceae7978b01c20b233693e072053700"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c2c7733101bb8c0b29ac9ee41073eaf602821a59"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/83d7ec14b0938ad8cae008058fd6f912f4a9a312"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/44567537a2623dcd2b4018a7f043cf8069579e5d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/41826e5297e67cd96a0a46fde06a5069a8ce436a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b3a3831b2eb884641906fc5e46207b205b6aea13"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0405a65e4ebd9eac13a765f9f02ac05851ca5421"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/37738fdf2ab1e504d1c63ce5bc0aeb6452d8f057"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}