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CVE-2024-27023 (GCVE-0-2024-27023)

Vulnerability from cvelistv5 – Published: 2024-05-01 12:49 – Updated: 2026-05-11 20:08
VLAI
Title
md: Fix missing release of 'active_io' for flush
Summary
In the Linux kernel, the following vulnerability has been resolved: md: Fix missing release of 'active_io' for flush submit_flushes atomic_set(&mddev->flush_pending, 1); rdev_for_each_rcu(rdev, mddev) atomic_inc(&mddev->flush_pending); bi->bi_end_io = md_end_flush submit_bio(bi); /* flush io is done first */ md_end_flush if (atomic_dec_and_test(&mddev->flush_pending)) percpu_ref_put(&mddev->active_io) -> active_io is not released if (atomic_dec_and_test(&mddev->flush_pending)) -> missing release of active_io For consequence, mddev_suspend() will wait for 'active_io' to be zero forever. Fix this problem by releasing 'active_io' in submit_flushes() if 'flush_pending' is decreased to zero.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:44 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f9f2d957a8ea93c73182aebf7de30935a58c027d , < 6b2ff10390b19a2364af622b6666b690443f9f3f (git)
Affected: 530cec617f5a8ba6f26bcbf0d64d75c951d17730 , < 02dad157ba11064d073f5499dc33552b227d5d3a (git)
Affected: c4c2345214b66e2505a26fd2ea58839dd7a1d48d , < 11f81438927f84edfaaeb5d5f10856c3a1c1fc82 (git)
Affected: fa2bbff7b0b4e211fec5e5686ef96350690597b5 , < 855678ed8534518e2b428bcbcec695de9ba248e8 (git)
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Linux Linux Affected: 6.1.75 , < 6.1.80 (semver)
Affected: 6.6.14 , < 6.6.19 (semver)
Affected: 6.7.2 , < 6.7.7 (semver)
guessed Create a notification for this product.
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                    "role": "CISA Coordinator",
                    "timestamp": "2024-09-10T15:44:37.253177Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-11T12:42:17.636Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/md/md.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "6b2ff10390b19a2364af622b6666b690443f9f3f",
                  "status": "affected",
                  "version": "f9f2d957a8ea93c73182aebf7de30935a58c027d",
                  "versionType": "git"
                },
                {
                  "lessThan": "02dad157ba11064d073f5499dc33552b227d5d3a",
                  "status": "affected",
                  "version": "530cec617f5a8ba6f26bcbf0d64d75c951d17730",
                  "versionType": "git"
                },
                {
                  "lessThan": "11f81438927f84edfaaeb5d5f10856c3a1c1fc82",
                  "status": "affected",
                  "version": "c4c2345214b66e2505a26fd2ea58839dd7a1d48d",
                  "versionType": "git"
                },
                {
                  "lessThan": "855678ed8534518e2b428bcbcec695de9ba248e8",
                  "status": "affected",
                  "version": "fa2bbff7b0b4e211fec5e5686ef96350690597b5",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/md/md.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "6.1.80",
                  "status": "affected",
                  "version": "6.1.75",
                  "versionType": "semver"
                },
                {
                  "lessThan": "6.6.19",
                  "status": "affected",
                  "version": "6.6.14",
                  "versionType": "semver"
                },
                {
                  "lessThan": "6.7.7",
                  "status": "affected",
                  "version": "6.7.2",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.80",
                      "versionStartIncluding": "6.1.75",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.19",
                      "versionStartIncluding": "6.6.14",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.7.7",
                      "versionStartIncluding": "6.7.2",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Fix missing release of \u0027active_io\u0027 for flush\n\nsubmit_flushes\n atomic_set(\u0026mddev-\u003eflush_pending, 1);\n rdev_for_each_rcu(rdev, mddev)\n  atomic_inc(\u0026mddev-\u003eflush_pending);\n  bi-\u003ebi_end_io = md_end_flush\n  submit_bio(bi);\n                        /* flush io is done first */\n                        md_end_flush\n                         if (atomic_dec_and_test(\u0026mddev-\u003eflush_pending))\n                          percpu_ref_put(\u0026mddev-\u003eactive_io)\n                          -\u003e active_io is not released\n\n if (atomic_dec_and_test(\u0026mddev-\u003eflush_pending))\n  -\u003e missing release of active_io\n\nFor consequence, mddev_suspend() will wait for \u0027active_io\u0027 to be zero\nforever.\n\nFix this problem by releasing \u0027active_io\u0027 in submit_flushes() if\n\u0027flush_pending\u0027 is decreased to zero."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-04T09:02:30.069Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/6b2ff10390b19a2364af622b6666b690443f9f3f"
            },
            {
              "url": "https://git.kernel.org/stable/c/02dad157ba11064d073f5499dc33552b227d5d3a"
            },
            {
              "url": "https://git.kernel.org/stable/c/11f81438927f84edfaaeb5d5f10856c3a1c1fc82"
            },
            {
              "url": "https://git.kernel.org/stable/c/855678ed8534518e2b428bcbcec695de9ba248e8"
            }
          ],
          "title": "md: Fix missing release of \u0027active_io\u0027 for flush",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-27023",
        "datePublished": "2024-05-01T12:49:21.063Z",
        "dateReserved": "2024-02-19T14:20:24.210Z",
        "dateUpdated": "2025-05-04T09:02:30.069Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.