CVE-2023-53461 (GCVE-0-2023-53461)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2025-10-02 07:04
VLAI?
Title
io_uring: wait interruptibly for request completions on exit
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: wait interruptibly for request completions on exit WHen the ring exits, cleanup is done and the final cancelation and waiting on completions is done by io_ring_exit_work. That function is invoked by kworker, which doesn't take any signals. Because of that, it doesn't really matter if we wait for completions in TASK_INTERRUPTIBLE or TASK_UNINTERRUPTIBLE state. However, it does matter to the hung task detection checker! Normally we expect cancelations and completions to happen rather quickly. Some test cases, however, will exit the ring and park the owning task stopped (eg via SIGSTOP). If the owning task needs to run task_work to complete requests, then io_ring_exit_work won't make any progress until the task is runnable again. Hence io_ring_exit_work can trigger the hung task detection, which is particularly problematic if panic-on-hung-task is enabled. As the ring exit doesn't take signals to begin with, have it wait interruptibly rather than uninterruptibly. io_uring has a separate stuck-exit warning that triggers independently anyway, so we're not really missing anything by making this switch.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 28e649dc9947e6525c95e32aa9a8e147925e3f56 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 8e29835366138389bfad3b31ea06960d0a77bf77 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < b50d6e06cca7b67a3d73ca660dda27662b76e6ea (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 58e80cb68b057e974768792c34708c6957810486 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 4826c59453b3b4677d6bf72814e7ababdea86949 (git)
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    Linux Linux Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/io_uring.c"
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          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.1"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "5.10.188",
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              "version": "5.15.121",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.121",
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                  "vulnerable": true
                },
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: wait interruptibly for request completions on exit\n\nWHen the ring exits, cleanup is done and the final cancelation and\nwaiting on completions is done by io_ring_exit_work. That function is\ninvoked by kworker, which doesn\u0027t take any signals. Because of that, it\ndoesn\u0027t really matter if we wait for completions in TASK_INTERRUPTIBLE\nor TASK_UNINTERRUPTIBLE state. However, it does matter to the hung task\ndetection checker!\n\nNormally we expect cancelations and completions to happen rather\nquickly. Some test cases, however, will exit the ring and park the\nowning task stopped (eg via SIGSTOP). If the owning task needs to run\ntask_work to complete requests, then io_ring_exit_work won\u0027t make any\nprogress until the task is runnable again. Hence io_ring_exit_work can\ntrigger the hung task detection, which is particularly problematic if\npanic-on-hung-task is enabled.\n\nAs the ring exit doesn\u0027t take signals to begin with, have it wait\ninterruptibly rather than uninterruptibly. io_uring has a separate\nstuck-exit warning that triggers independently anyway, so we\u0027re not\nreally missing anything by making this switch."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-02T07:04:22.533Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/28e649dc9947e6525c95e32aa9a8e147925e3f56"
        },
        {
          "url": "https://git.kernel.org/stable/c/8e29835366138389bfad3b31ea06960d0a77bf77"
        },
        {
          "url": "https://git.kernel.org/stable/c/b50d6e06cca7b67a3d73ca660dda27662b76e6ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/58e80cb68b057e974768792c34708c6957810486"
        },
        {
          "url": "https://git.kernel.org/stable/c/4826c59453b3b4677d6bf72814e7ababdea86949"
        }
      ],
      "title": "io_uring: wait interruptibly for request completions on exit",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53461",
    "datePublished": "2025-10-01T11:42:32.525Z",
    "dateReserved": "2025-10-01T11:39:39.399Z",
    "dateUpdated": "2025-10-02T07:04:22.533Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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