{
  "cveId": "CVE-2023-53327",
  "url": "https://patchblox.com/security/cve/CVE-2023-53327",
  "summary": "CVE-2023-53327 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53327, released September 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  iommufd/selftest: Catch overflow of uptr and len...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iommufd/selftest: Catch overflow of uptr and length  syzkaller hits a WARN_ON when trying to have a uptr close to UINTPTR_MAX:    WARNING: CPU: 1 PID: 393 at drivers/iommu/iommufd/selftest.c:403 iommufd_test\u002B0xb19/0x16f0   Modules linked in:   CPU: 1 PID: 393 Comm: repro Not tainted 6.2.0-c9c3395d5e3d #1   Hardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014   RIP: 0010:iommufd_test\u002B0xb19/0x16f0   Code: 94 c4 31 ff 44 89 e6 e8 a5 54 17 ff 45 84 e4 0f 85 bb 0b 00 00 41 be fb ff ff ff e8 31 53 17 ff e9 a0 f7 ff ff e8 27 53 17 ff \u003C0f\u003E 0b 41 be 8   RSP: 0018:ffffc90000eabdc0 EFLAGS: 00010246   RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8214c487   RDX: 0000000000000000 RSI: ffff88800f5c8000 RDI: 0000000000000002   RBP: ffffc90000eabe48 R08: 0000000000000000 R09: 0000000000000001   R10: 0000000000000001 R11: 0000000000000000 R12: 00000000cd2b0000   R13: 00000000cd2af000 R14: 0000000000000000 R15: ffffc90000eabe68   FS:  00007f94d76d5740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033   CR2: 0000000020000043 CR3: 0000000006880006 CR4: 0000000000770ee0   PKRU: 55555554   Call Trace:    \u003CTASK\u003E    ? write_comp_data\u002B0x2f/0x90    iommufd_fops_ioctl\u002B0x1ef/0x310    __x64_sys_ioctl\u002B0x10e/0x160    ? __pfx_iommufd_fops_ioctl\u002B0x10/0x10    do_syscall_64\u002B0x3b/0x90    entry_SYSCALL_64_after_hwframe\u002B0x72/0xdc  Check that the user memory range doesn\u0027t overflow.",
  "published": "2025-09-16T17:15:38Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00146,
  "epssPercentile": 0.03904,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53327",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53327",
      "released": "2025-09-16T17:15:38Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53327",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53327",
      "released": "2025-09-16T17:15:38Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}