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CVE-2023-54239 (GCVE-0-2023-54239)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2026-05-11 19:58
VLAI
Title
iommufd: Check for uptr overflow
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd: Check for uptr overflow syzkaller found that setting up a map with a user VA that wraps past zero can trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0 due to invalid arguments. Prevent creating a pages with a uptr and size that would math overflow. WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390 Modules linked in: CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:pfn_reader_user_pin+0x2e6/0x390 Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff <0f> 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00 RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72 RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002 RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60 R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000 FS: 00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0 PKRU: 55555554 Call Trace: <TASK> pfn_reader_next+0x14a/0x7b0 ? interval_tree_double_span_iter_update+0x11a/0x140 pfn_reader_first+0x140/0x1b0 iopt_pages_rw_slow+0x71/0x280 ? __this_cpu_preempt_check+0x20/0x30 iopt_pages_rw_access+0x2b2/0x5b0 iommufd_access_rw+0x19f/0x2f0 iommufd_test+0xd11/0x16f0 ? write_comp_data+0x2f/0x90 iommufd_fops_ioctl+0x206/0x330 __x64_sys_ioctl+0x10e/0x160 ? __pfx_iommufd_fops_ioctl+0x10/0x10 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8d160cd4d5066f864ec0f2c981470e55ac03ac27 , < 800963e7eb001ada8cf2418f159fb649694467f1 (git)
Affected: 8d160cd4d5066f864ec0f2c981470e55ac03ac27 , < e4395701330fc4aee530905039516fe770b81417 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/pages.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "800963e7eb001ada8cf2418f159fb649694467f1",
              "status": "affected",
              "version": "8d160cd4d5066f864ec0f2c981470e55ac03ac27",
              "versionType": "git"
            },
            {
              "lessThan": "e4395701330fc4aee530905039516fe770b81417",
              "status": "affected",
              "version": "8d160cd4d5066f864ec0f2c981470e55ac03ac27",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/pages.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.11",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Check for uptr overflow\n\nsyzkaller found that setting up a map with a user VA that wraps past zero\ncan trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0\ndue to invalid arguments.\n\nPrevent creating a pages with a uptr and size that would math overflow.\n\n  WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390\n  Modules linked in:\n  CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #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:pfn_reader_user_pin+0x2e6/0x390\n  Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff \u003c0f\u003e 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00\n  RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72\n  RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002\n  RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e\n  R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60\n  R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000\n  FS:  00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0\n  PKRU: 55555554\n  Call Trace:\n   \u003cTASK\u003e\n   pfn_reader_next+0x14a/0x7b0\n   ? interval_tree_double_span_iter_update+0x11a/0x140\n   pfn_reader_first+0x140/0x1b0\n   iopt_pages_rw_slow+0x71/0x280\n   ? __this_cpu_preempt_check+0x20/0x30\n   iopt_pages_rw_access+0x2b2/0x5b0\n   iommufd_access_rw+0x19f/0x2f0\n   iommufd_test+0xd11/0x16f0\n   ? write_comp_data+0x2f/0x90\n   iommufd_fops_ioctl+0x206/0x330\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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:58:08.672Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417"
        }
      ],
      "title": "iommufd: Check for uptr overflow",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54239",
    "datePublished": "2025-12-30T12:11:28.378Z",
    "dateReserved": "2025-12-30T12:06:44.509Z",
    "dateUpdated": "2026-05-11T19:58:08.672Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-54239",
      "date": "2026-09-14",
      "epss": "0.0018",
      "percentile": "0.0778"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54239\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:12.417\",\"lastModified\":\"2026-06-17T06:47:04.393\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd: Check for uptr overflow\\n\\nsyzkaller found that setting up a map with a user VA that wraps past zero\\ncan trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0\\ndue to invalid arguments.\\n\\nPrevent creating a pages with a uptr and size that would math overflow.\\n\\n  WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390\\n  Modules linked in:\\n  CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #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:pfn_reader_user_pin+0x2e6/0x390\\n  Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff \u003c0f\u003e 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00\\n  RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246\\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72\\n  RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002\\n  RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e\\n  R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60\\n  R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000\\n  FS:  00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000\\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n  CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0\\n  PKRU: 55555554\\n  Call Trace:\\n   \u003cTASK\u003e\\n   pfn_reader_next+0x14a/0x7b0\\n   ? interval_tree_double_span_iter_update+0x11a/0x140\\n   pfn_reader_first+0x140/0x1b0\\n   iopt_pages_rw_slow+0x71/0x280\\n   ? __this_cpu_preempt_check+0x20/0x30\\n   iopt_pages_rw_access+0x2b2/0x5b0\\n   iommufd_access_rw+0x19f/0x2f0\\n   iommufd_test+0xd11/0x16f0\\n   ? write_comp_data+0x2f/0x90\\n   iommufd_fops_ioctl+0x206/0x330\\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\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\niommufd: Comprobar desbordamiento de uptr\\n\\nsyzkaller encontr\u00f3 que configurar un mapa con una VA de usuario que se envuelve m\u00e1s all\u00e1 de cero puede activar WARN_ONs, particularmente de pin_user_pages devolviendo 0 de forma extra\u00f1a debido a argumentos inv\u00e1lidos.\\n\\nEvitar la creaci\u00f3n de p\u00e1ginas con un uptr y un tama\u00f1o que causar\u00edan un desbordamiento matem\u00e1tico.\\n\\n  ADVERTENCIA: CPU: 0 PID: 518 en drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390\\n  M\u00f3dulos enlazados:\\n  CPU: 0 PID: 518 Comm: repro No contaminado 6.3.0-rc2-eeac8ede1755+ #1\\n  Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\n  RIP: 0010:pfn_reader_user_pin+0x2e6/0x390\\n  Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff \u0026lt;0f\u0026gt; 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00\\n  RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246\\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72\\n  RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002\\n  RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e\\n  R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60\\n  R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000\\n  FS:  00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000\\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n  CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0\\n  PKRU: 55555554\\n  Rastreo de llamadas:\\n   \\n   pfn_reader_next+0x14a/0x7b0\\n   ? interval_tree_double_span_iter_update+0x11a/0x140\\n   pfn_reader_first+0x140/0x1b0\\n   iopt_pages_rw_slow+0x71/0x280\\n   ? __this_cpu_preempt_check+0x20/0x30\\n   iopt_pages_rw_access+0x2b2/0x5b0\\n   iommufd_access_rw+0x19f/0x2f0\\n   iommufd_test+0xd11/0x16f0\\n   ? write_comp_data+0x2f/0x90\\n   iommufd_fops_ioctl+0x206/0x330\\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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/iommufd/pages.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8d160cd4d5066f864ec0f2c981470e55ac03ac27\",\"lessThan\":\"800963e7eb001ada8cf2418f159fb649694467f1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8d160cd4d5066f864ec0f2c981470e55ac03ac27\",\"lessThan\":\"e4395701330fc4aee530905039516fe770b81417\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/iommufd/pages.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2.11\",\"lessThanOrEqual\":\"6.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T18:57:07+00:00",
      "cve": "CVE-2023-54239",
      "id": "CVE-2023-54239",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "166",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommufd: Check for uptr overflow",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54239.json",
      "version": "3"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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Detection rules are retrieved from Rulezet.