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FKIE_CVE-2023-52903

Vulnerability from fkie_nvd - Published: 2024-08-21 07:15 - Updated: 2026-08-04 10:18
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: lock overflowing for IOPOLL syzbot reports an issue with overflow filling for IOPOLL: WARNING: CPU: 0 PID: 28 at io_uring/io_uring.c:734 io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734 CPU: 0 PID: 28 Comm: kworker/u4:1 Not tainted 6.2.0-rc3-syzkaller-16369-g358a161a6a9e #0 Workqueue: events_unbound io_ring_exit_work Call trace:  io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734  io_req_cqe_overflow+0x5c/0x70 io_uring/io_uring.c:773  io_fill_cqe_req io_uring/io_uring.h:168 [inline]  io_do_iopoll+0x474/0x62c io_uring/rw.c:1065  io_iopoll_try_reap_events+0x6c/0x108 io_uring/io_uring.c:1513  io_uring_try_cancel_requests+0x13c/0x258 io_uring/io_uring.c:3056  io_ring_exit_work+0xec/0x390 io_uring/io_uring.c:2869  process_one_work+0x2d8/0x504 kernel/workqueue.c:2289  worker_thread+0x340/0x610 kernel/workqueue.c:2436  kthread+0x12c/0x158 kernel/kthread.c:376  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 There is no real problem for normal IOPOLL as flush is also called with uring_lock taken, but it's getting more complicated for IOPOLL|SQPOLL, for which __io_cqring_overflow_flush() happens from the CQ waiting path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/544d163d659d45a206d8929370d5a2984e546cb7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7fc3990dad04a677606337ebc61964094d6cb41bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de77faee280163ff03b7ab64af6c9d779a43d4c4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed4629d1e968359fbb91d0a3780b1e86a2c08845Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/rw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "de77faee280163ff03b7ab64af6c9d779a43d4c4",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "ed4629d1e968359fbb91d0a3780b1e86a2c08845",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "7fc3990dad04a677606337ebc61964094d6cb41b",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            },
            {
              "lessThan": "544d163d659d45a206d8929370d5a2984e546cb7",
              "status": "affected",
              "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/rw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.89",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "90BB6D42-B4A2-4088-8C86-2F91DFA6B7B6",
              "versionEndIncluding": "5.10.165",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E706841F-E788-4316-9B05-DA8EB60CE6B3",
              "versionEndExcluding": "5.15.89",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9275C81F-AE96-4CDB-AD20-7DBD36E5D909",
              "versionEndExcluding": "6.1.7",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "FF501633-2F44-4913-A8EE-B021929F49F6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "2BDA597B-CAC1-4DF0-86F0-42E142C654E9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "725C78C9-12CE-406F-ABE8-0813A01D66E8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: lock overflowing for IOPOLL\n\nsyzbot reports an issue with overflow filling for IOPOLL:\n\nWARNING: CPU: 0 PID: 28 at io_uring/io_uring.c:734 io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734\nCPU: 0 PID: 28 Comm: kworker/u4:1 Not tainted 6.2.0-rc3-syzkaller-16369-g358a161a6a9e #0\nWorkqueue: events_unbound io_ring_exit_work\nCall trace:\n\u00a0io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734\n\u00a0io_req_cqe_overflow+0x5c/0x70 io_uring/io_uring.c:773\n\u00a0io_fill_cqe_req io_uring/io_uring.h:168 [inline]\n\u00a0io_do_iopoll+0x474/0x62c io_uring/rw.c:1065\n\u00a0io_iopoll_try_reap_events+0x6c/0x108 io_uring/io_uring.c:1513\n\u00a0io_uring_try_cancel_requests+0x13c/0x258 io_uring/io_uring.c:3056\n\u00a0io_ring_exit_work+0xec/0x390 io_uring/io_uring.c:2869\n\u00a0process_one_work+0x2d8/0x504 kernel/workqueue.c:2289\n\u00a0worker_thread+0x340/0x610 kernel/workqueue.c:2436\n\u00a0kthread+0x12c/0x158 kernel/kthread.c:376\n\u00a0ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863\n\nThere is no real problem for normal IOPOLL as flush is also called with\nuring_lock taken, but it\u0027s getting more complicated for IOPOLL|SQPOLL,\nfor which __io_cqring_overflow_flush() happens from the CQ waiting path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring: bloqueo desbordado para IOPOLL syzbot informa un problema con el desbordamiento de llenado para IOPOLL: ADVERTENCIA: CPU: 0 PID: 28 en io_uring/io_uring.c:734 io_cqring_event_overflow+0x1c0/0x230 io_uring /io_uring.c:734 CPU: 0 PID: 28 Comm: kworker/u4:1 No contaminado 6.2.0-rc3-syzkaller-16369-g358a161a6a9e #0 Cola de trabajo: events_unbound io_ring_exit_work Seguimiento de llamadas: io_cqring_event_overflow+0x1c0/0x230 durante. c:734 io_req_cqe_overflow+0x5c/0x70 io_uring/io_uring.c:773 io_fill_cqe_req io_uring/io_uring.h:168 [en l\u00ednea] io_do_iopoll+0x474/0x62c io_uring/rw.c:1065 io_iopoll_try_reap_events+0x6c /0x108 io_uring/io_uring.c:1513 io_uring_try_cancel_requests+0x13c/0x258 io_uring/io_uring.c:3056 io_ring_exit_work+0xec/0x390 io_uring/io_uring.c:2869 Process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 trabajador_thread+0x340/0x610 ue.c:2436 khilo+ 0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 No hay ning\u00fan problema real para IOPOLL normal ya que tambi\u00e9n se llama a descarga con uring_lock tomado, pero se est\u00e1 volviendo m\u00e1s complicado para IOPOLL |SQPOLL, para el cual __io_cqring_overflow_flush() ocurre desde la ruta de espera de CQ."
    }
  ],
  "id": "CVE-2023-52903",
  "lastModified": "2026-08-04T10:18:48.153",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52903",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:03:21.069603Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-08-21T07:15:06.480",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/544d163d659d45a206d8929370d5a2984e546cb7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/7fc3990dad04a677606337ebc61964094d6cb41b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/de77faee280163ff03b7ab64af6c9d779a43d4c4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/ed4629d1e968359fbb91d0a3780b1e86a2c08845"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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