{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-38661",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-38661"
  ],
  "published": "2024-06-25T14:22:58Z",
  "summary": "s390/ap: Fix crash in AP internal function modify_bitmap()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ap: Fix crash in AP internal function modify_bitmap()\n\nA system crash like this\n\n  Failing address: 200000cb7df6f000 TEID: 200000cb7df6f403\n  Fault in home space mode while using kernel ASCE.\n  AS:00000002d71bc007 R3:00000003fe5b8007 S:000000011a446000 P:000000015660c13d\n  Oops: 0038 ilc:3 [#1] PREEMPT SMP\n  Modules linked in: mlx5_ib ...\n  CPU: 8 PID: 7556 Comm: bash Not tainted 6.9.0-rc7 #8\n  Hardware name: IBM 3931 A01 704 (LPAR)\n  Krnl PSW : 0704e00180000000 0000014b75e7b606 (ap_parse_bitmap_str+0x10e/0x1f8)\n  R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3\n  Krnl GPRS: 0000000000000001 ffffffffffffffc0 0000000000000001 00000048f96b75d3\n  000000cb00000100 ffffffffffffffff ffffffffffffffff 000000cb7df6fce0\n  000000cb7df6fce0 00000000ffffffff 000000000000002b 00000048ffffffff\n  000003ff9b2dbc80 200000cb7df6fcd8 0000014bffffffc0 000000cb7df6fbc8\n  Krnl Code: 0000014b75e7b5fc: a7840047            brc     8,0000014b75e7b68a\n  0000014b75e7b600: 18b2                lr      %r11,%r2\n  #0000014b75e7b602: a7f4000a            brc     15,0000014b75e7b616\n  >0000014b75e7b606: eb22d00000e6        laog    %r2,%r2,0(%r13)\n  0000014b75e7b60c: a7680001            lhi     %r6,1\n  0000014b75e7b610: 187b                lr      %r7,%r11\n  0000014b75e7b612: 84960021            brxh    %r9,%r6,0000014b75e7b654\n  0000014b75e7b616: 18e9                lr      %r14,%r9\n  Call Trace:\n  [<0000014b75e7b606>] ap_parse_bitmap_str+0x10e/0x1f8\n  ([<0000014b75e7b5dc>] ap_parse_bitmap_str+0xe4/0x1f8)\n  [<0000014b75e7b758>] apmask_store+0x68/0x140\n  [<0000014b75679196>] kernfs_fop_write_iter+0x14e/0x1e8\n  [<0000014b75598524>] vfs_write+0x1b4/0x448\n  [<0000014b7559894c>] ksys_write+0x74/0x100\n  [<0000014b7618a440>] __do_syscall+0x268/0x328\n  [<0000014b761a3558>] system_call+0x70/0x98\n  INFO: lockdep is turned off.\n  Last Breaking-Event-Address:\n  [<0000014b75e7b636>] ap_parse_bitmap_str+0x13e/0x1f8\n  Kernel panic - not syncing: Fatal exception: panic_on_oops\n\noccured when /sys/bus/ap/a[pq]mask was updated with a relative mask value\n(like +0x10-0x12,+60,-90) with one of the numeric values exceeding INT_MAX.\n\nThe fix is simple: use unsigned long values for the internal variables. The\ncorrect checks are already in place in the function but a simple int for\nthe internal variables was used with the possibility to overflow.",
  "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": "6.1.94",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-38661"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2062e3f1f2374102f8014d7ca286b9aa527bd558"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7c72af16abf2ec7520407098360bbba312289e05"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7360cef95aa1ea2b5efb7b5e2ed32e941664e1f0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/67011123453b91ec03671d40712fa213e94a01b9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8c5f5911c1b13170d3404eb992c6a0deaa8d81ad"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4c0bfb4e867c1ec6616a5049bd3618021e127056"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7dabe54a016defe11bb2a278cd9f1ff6db3feba6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d4f9d5a99a3fd1b1c691b7a1a6f8f3f25f4116c9"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}