Vulnerability-Lookup

GHSA-55HF-CR49-H3R7

Vulnerability from github – Published: 2026-01-05 12:30 – Updated: 2026-01-05 12:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68759"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-05T10:15:57Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-55hf-cr49-h3r7",
  "modified": "2026-01-05T12:30:29Z",
  "published": "2026-01-05T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68759"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b5b9c042b30befc5b37e4539ace95af70843473"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a813a74570212cb5f3a7d3b05c0cb0cd00bace1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9d1c4152e6d32fa74034464854bee262a60bc43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee7db11742b30641f21306105ad27a275e3c61d7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-01-05 09:32 – Updated: 2026-01-05 09:32

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

References

URL

Tags

	https://git.kernel.org/stable/c/ee7db11742b30641f…
	https://git.kernel.org/stable/c/a813a74570212cb5f…
	https://git.kernel.org/stable/c/c9d1c4152e6d32fa7…
	https://git.kernel.org/stable/c/9b5b9c042b30befc5…

Impacted products

Vendor

Product

Version

Linux

Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < ee7db11742b30641f21306105ad27a275e3c61d7 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < a813a74570212cb5f3a7d3b05c0cb0cd00bace1d (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < c9d1c4152e6d32fa74034464854bee262a60bc43 (git)
Affected: f653211197f3841f383fa9757ef8ce182c6cf627 , < 9b5b9c042b30befc5b37e4539ace95af70843473 (git)

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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ee7db11742b30641f21306105ad27a275e3c61d7",
              "status": "affected",
              "version": "f653211197f3841f383fa9757ef8ce182c6cf627",
              "versionType": "git"
            },
            {
              "lessThan": "a813a74570212cb5f3a7d3b05c0cb0cd00bace1d",
              "status": "affected",
              "version": "f653211197f3841f383fa9757ef8ce182c6cf627",
              "versionType": "git"
            },
            {
              "lessThan": "c9d1c4152e6d32fa74034464854bee262a60bc43",
              "status": "affected",
              "version": "f653211197f3841f383fa9757ef8ce182c6cf627",
              "versionType": "git"
            },
            {
              "lessThan": "9b5b9c042b30befc5b37e4539ace95af70843473",
              "status": "affected",
              "version": "f653211197f3841f383fa9757ef8ce182c6cf627",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.25"
            },
            {
              "lessThan": "2.6.25",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.63",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.13",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18.2",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "2.6.25",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T09:32:32.174Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ee7db11742b30641f21306105ad27a275e3c61d7"
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        },
        {
          "url": "https://git.kernel.org/stable/c/c9d1c4152e6d32fa74034464854bee262a60bc43"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b5b9c042b30befc5b37e4539ace95af70843473"
        }
      ],
      "title": "wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "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"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-55HF-CR49-H3R7

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

Tags

Sightings

Nomenclature