watch_queue: Free the page array when watch_queue is dismantled

{
  "id": "893e9c69c60db509bc305d0e6b190c396a27db2d07b3eb651c0dc28e4b8873ef",
  "url": "https://osv.dev/vulnerability/CVE-2022-49148",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "watch_queue: Free the page array when watch_queue is dismantled",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: watch_queue: Free the page array when watch_queue is dismantled Commit 7ea1a0124b6d (\"watch_queue: Free the alloc bitmap when the watch_queue is torn down\") took care of the bitmap, but not the page array. BUG: memory leak unreferenced object 0xffff88810d9bc140 (size 32): comm \"syz-executor335\", pid 3603, jiffies 4294946994 (age 12.840s) hex dump (first 32 bytes): 40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00 @.@............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: kmalloc_array include/linux/slab.h:621 [inline] kcalloc include/linux/slab.h:652 [inline] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline]",
    "evidence": "osv:CVE-2022-49148",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.33",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.16.19",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.17.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-49148",
      "aliases": [
        "CVE-2022-49148"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "c73be61cede5882f9605a852414db559c0ebedfd"
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                {
                  "fixed": "7169f60110915c8b53bffd43741fa020a75eb87a"
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                {
                  "fixed": "4913daecd04addb41bc96a9175a885e1c19862a8"
                },
                {
                  "fixed": "3963a5d1ff75585bddf0c3a918566a6be09d7520"
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                  "fixed": "375cd2536494cfbcdda84ae8b3e35bf19d0250b9"
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                  "fixed": "b490207017ba237d97b735b2aa66dc241ccd18f5"
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        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.8.0"
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                {
                  "fixed": "5.10.110"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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                {
                  "fixed": "5.16.19"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.17.0"
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                {
                  "fixed": "5.17.2"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49148.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.961949214Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/375cd2536494cfbcdda84ae8b3e35bf19d0250b9",
        "https://git.kernel.org/stable/c/3963a5d1ff75585bddf0c3a918566a6be09d7520",
        "https://git.kernel.org/stable/c/4913daecd04addb41bc96a9175a885e1c19862a8",
        "https://git.kernel.org/stable/c/7169f60110915c8b53bffd43741fa020a75eb87a",
        "https://git.kernel.org/stable/c/b490207017ba237d97b735b2aa66dc241ccd18f5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49148.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49148",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49148.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49148",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507534,
  "published_at": "2025-02-26T01:55:15.872+00:00"
}