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CVE-2026-74369 (GCVE-0-2026-74369)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:18
VLAI
Title
liveupdate: fix u-a-f in luo_file_unpreserve_files() and luo_file_finish()
Summary
In the Linux kernel, the following vulnerability has been resolved: liveupdate: fix u-a-f in luo_file_unpreserve_files() and luo_file_finish() In luo_file_unpreserve_files() and luo_file_finish(), reorder module_put() and xa_erase() to ensure the file handler module remains pinned while its operations are being accessed. Specifically, luo_get_id() dereferences fh->ops->get_id, so the module reference must be held until after xa_erase() (which calls luo_get_id) completes. For luo_file_finish(), this requires moving the module_put() call out of the luo_file_finish_one() helper and into the main loop of luo_file_finish() itself.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 00d0b372374f2528394aabf7b1f53f8dafe294de , < f7fca3db635022429382cf26e5b08b33558e375d (git)
Affected: 00d0b372374f2528394aabf7b1f53f8dafe294de , < 291dcd37c8c8f8f8e1bccc92228f44bf371762a8 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "product": "Linux",
          "programFiles": [
            "kernel/liveupdate/luo_file.c"
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            }
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nliveupdate: fix u-a-f in luo_file_unpreserve_files() and luo_file_finish()\n\nIn luo_file_unpreserve_files() and luo_file_finish(), reorder\nmodule_put() and xa_erase() to ensure the file handler module remains\npinned while its operations are being accessed.\n\nSpecifically, luo_get_id() dereferences fh-\u003eops-\u003eget_id, so the module\nreference must be held until after xa_erase() (which calls luo_get_id)\ncompletes.\n\nFor luo_file_finish(), this requires moving the module_put() call out of\nthe luo_file_finish_one() helper and into the main loop of\nluo_file_finish() itself."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:18:04.480Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f7fca3db635022429382cf26e5b08b33558e375d"
        },
        {
          "url": "https://git.kernel.org/stable/c/291dcd37c8c8f8f8e1bccc92228f44bf371762a8"
        }
      ],
      "title": "liveupdate: fix u-a-f in luo_file_unpreserve_files() and luo_file_finish()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74369",
    "datePublished": "2026-08-15T05:58:50.280Z",
    "dateReserved": "2026-08-15T05:44:03.888Z",
    "dateUpdated": "2026-08-17T05:18:04.480Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74369",
      "date": "2026-09-05",
      "epss": "0.00155",
      "percentile": "0.04974"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-19T10:01:35+00:00",
      "cve": "CVE-2026-74369",
      "id": "CVE-2026-74369",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: liveupdate: fix u-a-f in luo_file_unpreserve_files() and luo_file_finish()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74369.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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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.
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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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