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

Vulnerability from cvelistv5 – Published: 2026-01-05 09:32 – Updated: 2026-01-05 09:32
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < ee7db11742b30641f21306105ad27a275e3c61d7 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < a813a74570212cb5f3a7d3b05c0cb0cd00bace1d (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < c9d1c4152e6d32fa74034464854bee262a60bc43 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < 9b5b9c042b30befc5b37e4539ace95af70843473 (git)
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    Linux Linux Affected: 2.6.25
Unaffected: 0 , < 2.6.25 (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-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c"
          ],
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          ],
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "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": "2026-01-05T09:32:32.174Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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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": "2026-01-05T09:32:32.174Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68759\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-05T10:15:57.010\",\"lastModified\":\"2026-01-08T18:09:49.800\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/9b5b9c042b30befc5b37e4539ace95af70843473\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a813a74570212cb5f3a7d3b05c0cb0cd00bace1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c9d1c4152e6d32fa74034464854bee262a60bc43\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee7db11742b30641f21306105ad27a275e3c61d7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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