Vulnerability-Lookup

CVE-2026-80748 (GCVE-0-2026-80748)

Vulnerability from cvelistv5 – Published: 2026-09-03 08:26 – Updated: 2026-09-03 08:26

Title

mmc: loongson2: Fix sg iteration in data reorder functions

Summary

In the Linux kernel, the following vulnerability has been resolved: mmc: loongson2: Fix sg iteration in data reorder functions In ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(), the for_each_sg() macro already iterates over the scatterlist entries, with 'sg' pointing to the current entry. However, the code incorrectly uses '&sg[i]' and 'sg_dma_len(&sg[i])' inside the loop, which treats 'sg' as an array base and indexes it again, leading to access of wrong sg entries (or out-of-bounds if the list is not an array).

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/8f7f7a6d5aed8f346…
https://git.kernel.org/stable/c/db368164383c46f25…
https://git.kernel.org/stable/c/00179ed9fbe077996…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 2115772014bdac368317e997ed15016cf2792665 , < 8f7f7a6d5aed8f346a1c936fba02033c73a337dc (git) Affected: 2115772014bdac368317e997ed15016cf2792665 , < db368164383c46f256ed8152a41ae9300e615028 (git) Affected: 2115772014bdac368317e997ed15016cf2792665 , < 00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c (git)	guessed
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/loongson2-mmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8f7f7a6d5aed8f346a1c936fba02033c73a337dc",
              "status": "affected",
              "version": "2115772014bdac368317e997ed15016cf2792665",
              "versionType": "git"
            },
            {
              "lessThan": "db368164383c46f256ed8152a41ae9300e615028",
              "status": "affected",
              "version": "2115772014bdac368317e997ed15016cf2792665",
              "versionType": "git"
            },
            {
              "lessThan": "00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c",
              "status": "affected",
              "version": "2115772014bdac368317e997ed15016cf2792665",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/loongson2-mmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.46",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.10",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: loongson2: Fix sg iteration in data reorder functions\n\nIn ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(),\nthe for_each_sg() macro already iterates over the scatterlist entries,\nwith \u0027sg\u0027 pointing to the current entry. However, the code incorrectly\nuses \u0027\u0026sg[i]\u0027 and \u0027sg_dma_len(\u0026sg[i])\u0027 inside the loop, which treats\n\u0027sg\u0027 as an array base and indexes it again, leading to access of\nwrong sg entries (or out-of-bounds if the list is not an array)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-03T08:26:29.532Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8f7f7a6d5aed8f346a1c936fba02033c73a337dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/db368164383c46f256ed8152a41ae9300e615028"
        },
        {
          "url": "https://git.kernel.org/stable/c/00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c"
        }
      ],
      "title": "mmc: loongson2: Fix sg iteration in data reorder functions",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80748",
    "datePublished": "2026-09-03T08:26:29.532Z",
    "dateReserved": "2026-08-26T14:34:25.790Z",
    "dateUpdated": "2026-09-03T08:26:29.532Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80748",
      "date": "2026-09-03",
      "epss": "0.00198",
      "percentile": "0.09565"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80748\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-03T13:06:14.410\",\"lastModified\":\"2026-09-03T13:06:14.410\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmmc: loongson2: Fix sg iteration in data reorder functions\\n\\nIn ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(),\\nthe for_each_sg() macro already iterates over the scatterlist entries,\\nwith \u0027sg\u0027 pointing to the current entry. However, the code incorrectly\\nuses \u0027\u0026sg[i]\u0027 and \u0027sg_dma_len(\u0026sg[i])\u0027 inside the loop, which treats\\n\u0027sg\u0027 as an array base and indexes it again, leading to access of\\nwrong sg entries (or out-of-bounds if the list is not an array).\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/mmc/host/loongson2-mmc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2115772014bdac368317e997ed15016cf2792665\",\"lessThan\":\"8f7f7a6d5aed8f346a1c936fba02033c73a337dc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2115772014bdac368317e997ed15016cf2792665\",\"lessThan\":\"db368164383c46f256ed8152a41ae9300e615028\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2115772014bdac368317e997ed15016cf2792665\",\"lessThan\":\"00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/mmc/host/loongson2-mmc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.46\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.10\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8f7f7a6d5aed8f346a1c936fba02033c73a337dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/db368164383c46f256ed8152a41ae9300e615028\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

FKIE_CVE-2026-80748

Vulnerability from fkie_nvd - Published: 2026-09-03 13:06 - Updated: 2026-09-03 13:06

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8f7f7a6d5aed8f346a1c936fba02033c73a337dc
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/db368164383c46f256ed8152a41ae9300e615028

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/loongson2-mmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8f7f7a6d5aed8f346a1c936fba02033c73a337dc",
              "status": "affected",
              "version": "2115772014bdac368317e997ed15016cf2792665",
              "versionType": "git"
            },
            {
              "lessThan": "db368164383c46f256ed8152a41ae9300e615028",
              "status": "affected",
              "version": "2115772014bdac368317e997ed15016cf2792665",
              "versionType": "git"
            },
            {
              "lessThan": "00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c",
              "status": "affected",
              "version": "2115772014bdac368317e997ed15016cf2792665",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/loongson2-mmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: loongson2: Fix sg iteration in data reorder functions\n\nIn ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(),\nthe for_each_sg() macro already iterates over the scatterlist entries,\nwith \u0027sg\u0027 pointing to the current entry. However, the code incorrectly\nuses \u0027\u0026sg[i]\u0027 and \u0027sg_dma_len(\u0026sg[i])\u0027 inside the loop, which treats\n\u0027sg\u0027 as an array base and indexes it again, leading to access of\nwrong sg entries (or out-of-bounds if the list is not an array)."
    }
  ],
  "id": "CVE-2026-80748",
  "lastModified": "2026-09-03T13:06:14.410",
  "metrics": {},
  "published": "2026-09-03T13:06:14.410",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f7f7a6d5aed8f346a1c936fba02033c73a337dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/db368164383c46f256ed8152a41ae9300e615028"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-RCVM-9RHR-J437

Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-03 15:32

Details

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

mmc: loongson2: Fix sg iteration in data reorder functions

In ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(), the for_each_sg() macro already iterates over the scatterlist entries, with 'sg' pointing to the current entry. However, the code incorrectly uses '&sg[i]' and 'sg_dma_len(&sg[i])' inside the loop, which treats 'sg' as an array base and indexes it again, leading to access of wrong sg entries (or out-of-bounds if the list is not an array).

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-80748"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T13:06:14Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: loongson2: Fix sg iteration in data reorder functions\n\nIn ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(),\nthe for_each_sg() macro already iterates over the scatterlist entries,\nwith \u0027sg\u0027 pointing to the current entry. However, the code incorrectly\nuses \u0027\u0026sg[i]\u0027 and \u0027sg_dma_len(\u0026sg[i])\u0027 inside the loop, which treats\n\u0027sg\u0027 as an array base and indexes it again, leading to access of\nwrong sg entries (or out-of-bounds if the list is not an array).",
  "id": "GHSA-rcvm-9rhr-j437",
  "modified": "2026-09-03T15:32:16Z",
  "published": "2026-09-03T15:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80748"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00179ed9fbe07799676e2cb63c4e7f0e7cd80a5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f7f7a6d5aed8f346a1c936fba02033c73a337dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db368164383c46f256ed8152a41ae9300e615028"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-80748 (GCVE-0-2026-80748)

FKIE_CVE-2026-80748

GHSA-RCVM-9RHR-J437

Tags

Sightings

Nomenclature