{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89926",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-89926"
  ],
  "published": "2026-09-16T10:32:03Z",
  "summary": "KVM: s390: Fix length check __import_wp_info()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix length check __import_wp_info()\n\nstruct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user\nspace. This is then assigned to wp_info->len, which is an int. The bounds\ncheck is done on the truncated value while the allocation uses the\nuntruncated one:\n\n\twp_info->len = bp_data->len;\n\t[...]\n\tif (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE)\n\t\treturn -EINVAL;\n\n\twp_info->old_data = kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT);\n\nUse the validated value for the allocation as intended. Without this\nfix userspace can trigger >4GB allocations which will fail and result\nin a WARN due to MAX_PAGE_ORDER.",
  "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": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89926"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/aef540194effd768bed0bd2e6a74fe135a3d7c3a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/71153d3262517e1c02c3a66aa5094f279b2d1454"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fec89d327d9b2b669b5bbdac209386c6317c3722"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b94ab9caa5d72c78226121cccff5e33f946da900"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/beb9c55af609c4c7308259d7191688c75a4e3d4a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3fe801db90bdeefb0bbdda42d832846b53f64f8a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4c07680a467e2f7697245bcd11691bffb2a6f0ed"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-16T10:32:03Z"
  }
}