ghsa-p73w-x3r8-72c9
Vulnerability from github
Published
2025-03-14 00:30
Modified
2025-03-14 00:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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]

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49148"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:51Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatch_queue: Free the page array when watch_queue is dismantled\n\nCommit 7ea1a0124b6d (\"watch_queue: Free the alloc bitmap when the\nwatch_queue is torn down\") took care of the bitmap, but not the page\narray.\n\n  BUG: memory leak\n  unreferenced object 0xffff88810d9bc140 (size 32):\n  comm \"syz-executor335\", pid 3603, jiffies 4294946994 (age 12.840s)\n  hex dump (first 32 bytes):\n    40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00  @.@.............\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n     kmalloc_array include/linux/slab.h:621 [inline]\n     kcalloc include/linux/slab.h:652 [inline]\n     watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251\n     pipe_ioctl+0x82/0x140 fs/pipe.c:632\n     vfs_ioctl fs/ioctl.c:51 [inline]\n     __do_sys_ioctl fs/ioctl.c:874 [inline]\n     __se_sys_ioctl fs/ioctl.c:860 [inline]\n     __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860\n     do_syscall_x64 arch/x86/entry/common.c:50 [inline]",
  "id": "GHSA-p73w-x3r8-72c9",
  "modified": "2025-03-14T00:30:50Z",
  "published": "2025-03-14T00:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49148"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/375cd2536494cfbcdda84ae8b3e35bf19d0250b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3963a5d1ff75585bddf0c3a918566a6be09d7520"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4913daecd04addb41bc96a9175a885e1c19862a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7169f60110915c8b53bffd43741fa020a75eb87a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b490207017ba237d97b735b2aa66dc241ccd18f5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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