CVE-2025-68759 (GCVE-0-2025-68759)

Vulnerability from cvelistv5 – Published: 2026-01-05 09:32 – Updated: 2026-05-11 21:52
VLAI
Title
wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring() In rtl8180_init_rx_ring(), memory is allocated for skb packets and DMA allocations in a loop. When an allocation fails, the previously successful allocations are not freed on exit. Fix that by jumping to err_free_rings label on error, which calls rtl8180_free_rx_ring() to free the allocations. Remove the free of rx_ring in rtl8180_init_rx_ring() error path, and set the freed priv->rx_buf entry to null, to avoid double free.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < 3677c01891fb0239361e444afee8398868e34bdf (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < 89caaeee8dd95fae8bb4f4964e6fe3ca688500c4 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < a4fb7cca9837378878e6c94d9e7af019c8fdfcdb (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < bf8513dfa31ea015c9cf415796dca2113d293840 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < ee7db11742b30641f21306105ad27a275e3c61d7 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < a813a74570212cb5f3a7d3b05c0cb0cd00bace1d (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < c9d1c4152e6d32fa74034464854bee262a60bc43 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < 9b5b9c042b30befc5b37e4539ace95af70843473 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.25
Unaffected: 0 , < 2.6.25 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.63 , ≤ 6.12.* (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()\n\nIn rtl8180_init_rx_ring(), memory is allocated for skb packets and DMA\nallocations in a loop. When an allocation fails, the previously\nsuccessful allocations are not freed on exit.\n\nFix that by jumping to err_free_rings label on error, which calls\nrtl8180_free_rx_ring() to free the allocations. Remove the free of\nrx_ring in rtl8180_init_rx_ring() error path, and set the freed\npriv-\u003erx_buf entry to null, to avoid double free."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:52:48.124Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/3677c01891fb0239361e444afee8398868e34bdf"
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        {
          "url": "https://git.kernel.org/stable/c/89caaeee8dd95fae8bb4f4964e6fe3ca688500c4"
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        {
          "url": "https://git.kernel.org/stable/c/a4fb7cca9837378878e6c94d9e7af019c8fdfcdb"
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          "url": "https://git.kernel.org/stable/c/bf8513dfa31ea015c9cf415796dca2113d293840"
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      "title": "wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68759",
    "datePublished": "2026-01-05T09:32:32.174Z",
    "dateReserved": "2025-12-24T10:30:51.033Z",
    "dateUpdated": "2026-05-11T21:52:48.124Z",
    "state": "PUBLISHED"
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      "date": "2026-10-31",
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      "cve": "CVE-2025-68759",
      "id": "msrc_CVE-2025-68759",
      "initial_release_date": "2026-01-02T00:00:00.000Z",
      "product_status:fixed": "1",
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2025-68759.json",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()\n\nIn rtl8180_init_rx_ring(), memory is allocated for skb packets and DMA\nallocations in a loop. When an allocation fails, the previously\nsuccessful allocations are not freed on exit.\n\nFix that by jumping to err_free_rings label on error, which calls\nrtl8180_free_rx_ring() to free the allocations. Remove the free of\nrx_ring in rtl8180_init_rx_ring() error path, and set the freed\npriv-\u003erx_buf entry to null, to avoid double free."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: rtl818x: Soluciona posibles fugas de memoria en rtl8180_init_rx_ring()\n\nEn rtl8180_init_rx_ring(), se asigna memoria para paquetes skb y asignaciones DMA en un bucle. Cuando una asignaci\u00f3n falla, las asignaciones previamente exitosas no se liberan al salir.\n\nEsto se soluciona saltando a la etiqueta err_free_rings en caso de error, que llama a rtl8180_free_rx_ring() para liberar las asignaciones. Eliminar la liberaci\u00f3n de rx_ring en la ruta de error de rtl8180_init_rx_ring(), y establecer la entrada priv  -\u003e  rx_buf liberada en nulo, para evitar la doble liberaci\u00f3n."
          }
        ],
        "id": "CVE-2025-68759",
        "lastModified": "2026-10-14T19:10:00.297",
        "metrics": {},
        "published": "2026-01-05T10:15:57.010",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:23:01+00:00",
      "cve": "CVE-2025-68759",
      "id": "CVE-2025-68759",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68759.json",
      "version": "3"
    }
  }
}



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