CVE-2025-40337 (GCVE-0-2025-40337)

Vulnerability from cvelistv5 – Published: 2025-12-09 04:09 – Updated: 2025-12-09 04:09
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Correctly handle Rx checksum offload errors The stmmac_rx function would previously set skb->ip_summed to CHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled and the packet was of a known IP ethertype. However, this logic failed to check if the hardware had actually reported a checksum error. The hardware status, indicating a header or payload checksum failure, was being ignored at this stage. This could cause corrupt packets to be passed up the network stack as valid. This patch corrects the logic by checking the `csum_none` status flag, which is set when the hardware reports a checksum error. If this flag is set, skb->ip_summed is now correctly set to CHECKSUM_NONE, ensuring the kernel's network stack will perform its own validation and properly handle the corrupt packet.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 63fbe0e6413279d5ea5842e2423e351ded547683 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 719fcdf29051f7471d5d433475af76219019d33d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1aa319e0f12d2d761a31556b82a5852c98eb0bea (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ee0aace5f844ef59335148875d05bec8764e71e8 (git)
Create a notification for this product.
    Linux Linux Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "63fbe0e6413279d5ea5842e2423e351ded547683",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "719fcdf29051f7471d5d433475af76219019d33d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1aa319e0f12d2d761a31556b82a5852c98eb0bea",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ee0aace5f844ef59335148875d05bec8764e71e8",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "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": "6.6.117",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.58",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Correctly handle Rx checksum offload errors\n\nThe stmmac_rx function would previously set skb-\u003eip_summed to\nCHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled\nand the packet was of a known IP ethertype.\n\nHowever, this logic failed to check if the hardware had actually\nreported a checksum error. The hardware status, indicating a header or\npayload checksum failure, was being ignored at this stage. This could\ncause corrupt packets to be passed up the network stack as valid.\n\nThis patch corrects the logic by checking the `csum_none` status flag,\nwhich is set when the hardware reports a checksum error. If this flag\nis set, skb-\u003eip_summed is now correctly set to CHECKSUM_NONE,\nensuring the kernel\u0027s network stack will perform its own validation and\nproperly handle the corrupt packet."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T04:09:53.808Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/63fbe0e6413279d5ea5842e2423e351ded547683"
        },
        {
          "url": "https://git.kernel.org/stable/c/719fcdf29051f7471d5d433475af76219019d33d"
        },
        {
          "url": "https://git.kernel.org/stable/c/1aa319e0f12d2d761a31556b82a5852c98eb0bea"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee0aace5f844ef59335148875d05bec8764e71e8"
        }
      ],
      "title": "net: stmmac: Correctly handle Rx checksum offload errors",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40337",
    "datePublished": "2025-12-09T04:09:53.808Z",
    "dateReserved": "2025-04-16T07:20:57.186Z",
    "dateUpdated": "2025-12-09T04:09:53.808Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40337\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-09T16:17:43.923\",\"lastModified\":\"2025-12-09T18:36:53.557\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: stmmac: Correctly handle Rx checksum offload errors\\n\\nThe stmmac_rx function would previously set skb-\u003eip_summed to\\nCHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled\\nand the packet was of a known IP ethertype.\\n\\nHowever, this logic failed to check if the hardware had actually\\nreported a checksum error. The hardware status, indicating a header or\\npayload checksum failure, was being ignored at this stage. This could\\ncause corrupt packets to be passed up the network stack as valid.\\n\\nThis patch corrects the logic by checking the `csum_none` status flag,\\nwhich is set when the hardware reports a checksum error. If this flag\\nis set, skb-\u003eip_summed is now correctly set to CHECKSUM_NONE,\\nensuring the kernel\u0027s network stack will perform its own validation and\\nproperly handle the corrupt packet.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1aa319e0f12d2d761a31556b82a5852c98eb0bea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/63fbe0e6413279d5ea5842e2423e351ded547683\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/719fcdf29051f7471d5d433475af76219019d33d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee0aace5f844ef59335148875d05bec8764e71e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.