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CVE-2026-72308 (GCVE-0-2026-72308)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-23 12:47
VLAI
Title
mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()
Summary
In the Linux kernel, the following vulnerability has been resolved: mlxsw: fix refcount leak in mlxsw_sp_port_lag_join() When mlxsw_sp_port_lag_index_get() fails, mlxsw_sp_port_lag_join() returns an error without releasing the lag reference obtained by the earlier mlxsw_sp_lag_get(). All other error paths in the function jump to the cleanup label that ends with mlxsw_sp_lag_put(), so this is a single missed release. Fix the leak by replacing the bare 'return err' with a goto to the existing error cleanup label, which will drop the reference safely.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 99ff5b0083eae6f774360c4ea6874604e6c9b553 (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 9bf2d6eea26a226f8ebab7baea6f2b018f914560 (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 8b3350eacd9df0597bfe36a594df7b9def0b3edf (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 2d8b3c3e129973a51ae924bdcf6993a76b828814 (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < cab468c3c03f4bcd7530ce2783a4140da14efb7b (git)
Affected: 0d65fc13042fce6a2d6de58ff0dc9531e8523c07 , < 41c8c1d65b32beacd8d916a22457b4f6e47f45af (git)
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Linux Linux Affected: 4.5
Unaffected: 0 , < 4.5 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.184 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: fix refcount leak in mlxsw_sp_port_lag_join()\n\nWhen mlxsw_sp_port_lag_index_get() fails, mlxsw_sp_port_lag_join()\nreturns an error without releasing the lag reference obtained by\nthe earlier mlxsw_sp_lag_get().  All other error paths in the\nfunction jump to the cleanup label that ends with\nmlxsw_sp_lag_put(), so this is a single missed release.\n\nFix the leak by replacing the bare \u0027return err\u0027 with a goto to the\nexisting error cleanup label, which will drop the reference safely."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-23T12:47:14.564Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b"
        },
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          "url": "https://git.kernel.org/stable/c/99ff5b0083eae6f774360c4ea6874604e6c9b553"
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          "url": "https://git.kernel.org/stable/c/41c8c1d65b32beacd8d916a22457b4f6e47f45af"
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    "cveId": "CVE-2026-72308",
    "datePublished": "2026-08-15T05:55:25.260Z",
    "dateReserved": "2026-08-09T03:40:39.918Z",
    "dateUpdated": "2026-08-23T12:47:14.564Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T05:25:28+00:00",
      "cve": "CVE-2026-72308",
      "id": "CVE-2026-72308",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72308.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.

Sightings

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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.
  • 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.