{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-63973",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-63973"
  ],
  "published": "2026-07-19T14:56:29Z",
  "summary": "net: mana: Add NULL guards in teardown path to prevent panic on attach failure",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Add NULL guards in teardown path to prevent panic on attach failure\n\nWhen queue allocation fails partway through, the error cleanup frees\nand NULLs apc->tx_qp and apc->rxqs. Multiple teardown paths such as\nmana_remove(), mana_change_mtu() recovery, and internal error handling\nin mana_alloc_queues() can subsequently call into functions that\ndereference these pointers without NULL checks:\n\n- mana_chn_setxdp() dereferences apc->rxqs[0], causing a NULL pointer\n  dereference panic (CR2: 0000000000000000 at mana_chn_setxdp+0x26).\n- mana_destroy_vport() iterates apc->rxqs without a NULL check.\n- mana_fence_rqs() iterates apc->rxqs without a NULL check.\n- mana_dealloc_queues() iterates apc->tx_qp without a NULL check.\n\nAdd NULL guards for apc->rxqs in mana_fence_rqs(),\nmana_destroy_vport(), and before the mana_chn_setxdp() call. Add a\nNULL guard for apc->tx_qp in mana_dealloc_queues() to skip TX queue\ndraining when TX queues were never allocated or already freed.",
  "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": "6.1.176",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-63973"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/da7e4a1aaf397af6a094f640c92d6bc7564c10db"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/95e414f8324385771bdfd6d497a01d5593813ccb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/26a96fa81496afe7d162d172ccdc8cb9dbc685d2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/da87896f34e0a51489811d1a684e2953099ca98f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a9c520fdcb1cb2e79c163c12d359b5e1ee40007"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/17bfe0a8c014ee1d542ad352cd6a0a505361664a"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-07-19T14:56:29Z"
  }
}