{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53327",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53327",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-16T16:12:03.417Z",
    "updatedAt": "2026-05-11T19:42:48.281Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "iommufd/selftest: Catch overflow of uptr and length",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/selftest: Catch overflow of uptr and length\n\nsyzkaller hits a WARN_ON when trying to have a uptr close to UINTPTR_MAX:\n\n  WARNING: CPU: 1 PID: 393 at drivers/iommu/iommufd/selftest.c:403 iommufd_test+0xb19/0x16f0\n  Modules linked in:\n  CPU: 1 PID: 393 Comm: repro Not tainted 6.2.0-c9c3395d5e3d #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n  RIP: 0010:iommufd_test+0xb19/0x16f0\n  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 <0f> 0b 41 be 8\n  RSP: 0018:ffffc90000eabdc0 EFLAGS: 00010246\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8214c487\n  RDX: 0000000000000000 RSI: ffff88800f5c8000 RDI: 0000000000000002\n  RBP: ffffc90000eabe48 R08: 0000000000000000 R09: 0000000000000001\n  R10: 0000000000000001 R11: 0000000000000000 R12: 00000000cd2b0000\n  R13: 00000000cd2af000 R14: 0000000000000000 R15: ffffc90000eabe68\n  FS:  00007f94d76d5740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000020000043 CR3: 0000000006880006 CR4: 0000000000770ee0\n  PKRU: 55555554\n  Call Trace:\n   <TASK>\n   ? write_comp_data+0x2f/0x90\n   iommufd_fops_ioctl+0x1ef/0x310\n   __x64_sys_ioctl+0x10e/0x160\n   ? __pfx_iommufd_fops_ioctl+0x10/0x10\n   do_syscall_64+0x3b/0x90\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nCheck that the user memory range doesn't overflow.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f4b20bb34c83dceade5470288f48f94ce3598ada",
              "status": "affected",
              "versionType": "git",
              "lessThan": "adac6508c235a092b91ed9c0110ecf140e9e9441"
            },
            {
              "version": "f4b20bb34c83dceade5470288f48f94ce3598ada",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3fb3505636d033bbf7a0851dac63d01732c51d62"
            },
            {
              "version": "f4b20bb34c83dceade5470288f48f94ce3598ada",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fd8c1a4aee973e87d890a5861e106625a33b2c4e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.2",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.2"
            },
            {
              "version": "6.2.15",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}