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CVE-2026-72439 (GCVE-0-2026-72439)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:14
VLAI
Title
md/raid10: fix writes_pending leak on write request failures
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix writes_pending leak on write request failures raid10_make_request() acquires a writes_pending reference with md_write_start() before dispatching write requests. Several failure paths in raid10_write_request() complete the bio and return without reaching the normal write completion path, causing the corresponding md_write_end() to be skipped. Make raid10_write_request() return a status indicating whether the write request was successfully queued. This allows raid10_make_request() to release the writes_pending reference with md_write_end() when a write request fails.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c9aa889b035fca4598ae985a0f0c76ebbb547ad2 , < f94031c94eaebe14a7c9e91720064de0c5a54a6c (git)
Affected: c9aa889b035fca4598ae985a0f0c76ebbb547ad2 , < e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d (git)
Affected: 39db562b3fedb93978a7e42dd216b306740959f8 (git)
Affected: 5.15.111 , < 5.16 (semver)
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Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending leak on write request failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before dispatching write requests. Several failure\npaths in raid10_write_request() complete the bio and return without\nreaching the normal write completion path, causing the corresponding\nmd_write_end() to be skipped.\n\nMake raid10_write_request() return a status indicating whether the write\nrequest was successfully queued. This allows raid10_make_request() to\nrelease the writes_pending reference with md_write_end() when a write\nrequest fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:14:39.934Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2026-08-15T05:56:52.023Z",
    "dateReserved": "2026-08-09T03:40:39.930Z",
    "dateUpdated": "2026-08-17T05:14:39.934Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T05:25:45+00:00",
      "cve": "CVE-2026-72439",
      "id": "CVE-2026-72439",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: md/raid10: fix writes_pending leak on write request failures",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72439.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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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.
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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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