{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-63822",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-63822"
  ],
  "published": "2026-07-19T12:02:32Z",
  "summary": "wifi: ath11k: fix warning when unbinding",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: fix warning when unbinding\n\nIf there is an error during some initialization related to firmware,\nthe buffers dp->tx_ring[i].tx_status are released.\nHowever this is released again when the device is unbinded (ath11k_pci),\nand we get:\nWARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90\nCall Trace:\nfree_large_kmalloc\nath11k_dp_free\nath11k_core_deinit\nath11k_pci_remove\n...\n\nThe issue is always reproducible from a VM because the MSI addressing\ninitialization is failing.\n\nIn order to fix the issue, just set the buffers to NULL after releasing in\norder to avoid the double free.",
  "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-2026-63822"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}