Vulnerability-Lookup

GHSA-RXMP-73HH-6V66

Vulnerability from github – Published: 2025-12-16 18:31 – Updated: 2026-07-30 06:32

Details

In the Linux kernel, the following vulnerability has been resolved:

net: sxgbe: fix potential NULL dereference in sxgbe_rx()

Currently, when skb is null, the driver prints an error and then dereferences skb on the next line.

To fix this, let's add a 'break' after the error message to switch to sxgbe_rx_refill(), which is similar to the approach taken by the other drivers in this particular case, e.g. calxeda with xgmac_rx().

Found during a code review.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68302"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T16:16:09Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sxgbe: fix potential NULL dereference in sxgbe_rx()\n\nCurrently, when skb is null, the driver prints an error and then\ndereferences skb on the next line.\n\nTo fix this, let\u0027s add a \u0027break\u0027 after the error message to switch\nto sxgbe_rx_refill(), which is similar to the approach taken by the\nother drivers in this particular case, e.g. calxeda with xgmac_rx().\n\nFound during a code review.",
  "id": "GHSA-rxmp-73hh-6v66",
  "modified": "2026-07-30T06:32:25Z",
  "published": "2025-12-16T18:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68302"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18ef3ad1bb57dcf1a9ee61736039aedccf670b21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46e5332126596a2ca791140feab18ce1fc1a3c86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fd789d6ea4915034eb6bcb72f6883c8151083e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88f46c0be77bfe45830ac33102c75be7c34ac3f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac171c3c755499c9f87fe30b920602255f8b5648"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5bce28f6b9125502abec4a67d68eabcd24b3b17"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-68302 (GCVE-0-2025-68302)

Vulnerability from cvelistv5 – Published: 2025-12-16 15:06 – Updated: 2026-08-05 12:10

Title

net: sxgbe: fix potential NULL dereference in sxgbe_rx()

Summary

In the Linux kernel, the following vulnerability has been resolved: net: sxgbe: fix potential NULL dereference in sxgbe_rx() Currently, when skb is null, the driver prints an error and then dereferences skb on the next line. To fix this, let's add a 'break' after the error message to switch to sxgbe_rx_refill(), which is similar to the approach taken by the other drivers in this particular case, e.g. calxeda with xgmac_rx(). Found during a code review.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root Scorecard

References

7 references

URL	Tags
https://git.kernel.org/stable/c/ac171c3c755499c9f…
https://git.kernel.org/stable/c/18ef3ad1bb57dcf1a…
https://git.kernel.org/stable/c/46e5332126596a2ca…
https://git.kernel.org/stable/c/7fd789d6ea4915034…
https://git.kernel.org/stable/c/45b5b4ddb8d6bea5f…
https://git.kernel.org/stable/c/88f46c0be77bfe458…
https://git.kernel.org/stable/c/f5bce28f6b9125502…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < ac171c3c755499c9f87fe30b920602255f8b5648 (git) Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < 18ef3ad1bb57dcf1a9ee61736039aedccf670b21 (git) Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < 46e5332126596a2ca791140feab18ce1fc1a3c86 (git) Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < 7fd789d6ea4915034eb6bcb72f6883c8151083e5 (git) Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < 45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc (git) Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < 88f46c0be77bfe45830ac33102c75be7c34ac3f3 (git) Affected: 1edb9ca69e8a7988900fc0283e10550b5592164d , < f5bce28f6b9125502abec4a67d68eabcd24b3b17 (git)
Linux	Linux	Affected: 3.15 Unaffected: 0 , < 3.15 (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.119 , ≤ 6.6.* (semver) Unaffected: 6.12.61 , ≤ 6.12.* (semver) Unaffected: 6.17.11 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ac171c3c755499c9f87fe30b920602255f8b5648",
              "status": "affected",
              "version": "1edb9ca69e8a7988900fc0283e10550b5592164d",
              "versionType": "git"
            },
            {
              "lessThan": "18ef3ad1bb57dcf1a9ee61736039aedccf670b21",
              "status": "affected",
              "version": "1edb9ca69e8a7988900fc0283e10550b5592164d",
              "versionType": "git"
            },
            {
              "lessThan": "46e5332126596a2ca791140feab18ce1fc1a3c86",
              "status": "affected",
              "version": "1edb9ca69e8a7988900fc0283e10550b5592164d",
              "versionType": "git"
            },
            {
              "lessThan": "7fd789d6ea4915034eb6bcb72f6883c8151083e5",
              "status": "affected",
              "version": "1edb9ca69e8a7988900fc0283e10550b5592164d",
              "versionType": "git"
            },
            {
              "lessThan": "45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "88f46c0be77bfe45830ac33102c75be7c34ac3f3",
              "status": "affected",
              "version": "1edb9ca69e8a7988900fc0283e10550b5592164d",
              "versionType": "git"
            },
            {
              "lessThan": "f5bce28f6b9125502abec4a67d68eabcd24b3b17",
              "status": "affected",
              "version": "1edb9ca69e8a7988900fc0283e10550b5592164d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "lessThan": "3.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.247",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.119",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.247",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.197",
                  "versionStartIncluding": "3.15",
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                },
                {
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                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
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                  "versionStartIncluding": "3.15",
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                },
                {
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                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sxgbe: fix potential NULL dereference in sxgbe_rx()\n\nCurrently, when skb is null, the driver prints an error and then\ndereferences skb on the next line.\n\nTo fix this, let\u0027s add a \u0027break\u0027 after the error message to switch\nto sxgbe_rx_refill(), which is similar to the approach taken by the\nother drivers in this particular case, e.g. calxeda with xgmac_rx().\n\nFound during a code review."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - Unauthenticated network traffic is processed by the SXGBE hardware receive ring before any protocol authentication, and routed packets can reach the affected NIC without requiring local or adjacent access.\nAC:L - A sustained packet flood can drive GFP_ATOMIC RX-buffer allocation failures and advance the receive cursor to the resulting dirty descriptor; the attacker controls and can repeatedly generate the required traffic.\nPR:N - The vulnerable receive path runs before authentication or privilege checks, so the remote sender requires no account, capability, or other privileges on the target.\nUI:N - Exploitation requires only delivery of network traffic to an active SXGBE interface and does not depend on any user action.\nS:U - The NULL dereference affects the same host kernel and does not cross a virtualization, IOMMU, or other distinct security boundary.\nC:N - The defect dereferences a NULL skb pointer and provides no attacker-controlled out-of-bounds read, use-after-free, or information-disclosure primitive.\nI:N - The defect is a pure NULL-pointer dereference with no attacker-controlled memory corruption, arbitrary write, or data-modification primitive.\nA:H - The NULL dereference occurs in the kernel NAPI receive path and can cause an oops or kernel panic, producing complete loss of availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:10:43.401Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/18ef3ad1bb57dcf1a9ee61736039aedccf670b21"
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          "url": "https://git.kernel.org/stable/c/46e5332126596a2ca791140feab18ce1fc1a3c86"
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        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/88f46c0be77bfe45830ac33102c75be7c34ac3f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/f5bce28f6b9125502abec4a67d68eabcd24b3b17"
        }
      ],
      "title": "net: sxgbe: fix potential NULL dereference in sxgbe_rx()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68302",
    "datePublished": "2025-12-16T15:06:20.420Z",
    "dateReserved": "2025-12-16T14:48:05.293Z",
    "dateUpdated": "2026-08-05T12:10:43.401Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-RXMP-73HH-6V66

CVE-2025-68302 (GCVE-0-2025-68302)

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