Vulnerability-Lookup

CVE-2026-74707 (GCVE-0-2026-74707)

Vulnerability from cvelistv5 – Published: 2026-08-22 15:33 – Updated: 2026-08-22 15:33

Title

xsk: validate metadata when processing requests

Summary

In the Linux kernel, the following vulnerability has been resolved: xsk: validate metadata when processing requests The zero-copy path validates TX metadata while obtaining the descriptor context, then reads it again later when preparing the hardware request. User space can change the metadata between those operations and bypass the original validation. Validate the metadata in xsk_tx_metadata_request() and use the resulting flags snapshot for every feature check. Read request fields once so all zero-copy drivers process only values observed after successful validation.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/5fd121971912dee2f…
https://git.kernel.org/stable/c/0cc7aa6e0d19027fd…
https://git.kernel.org/stable/c/849b1664dbda1cf6c…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: ca4419f15abd19ba8be1e109661b60f9f5b6c9f0 , < 5fd121971912dee2f5af1efec64462ac722deb17 (git) Affected: ca4419f15abd19ba8be1e109661b60f9f5b6c9f0 , < 0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba (git) Affected: ca4419f15abd19ba8be1e109661b60f9f5b6c9f0 , < 849b1664dbda1cf6c63e0fd4f9dec23782b8c851 (git) Affected: d9d736c416c9a85f84e15435ba82a177262e745b (git) Affected: 6.14.2 , < 6.15 (semver)	guessed
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.45 , ≤ 6.18.* (semver) Unaffected: 7.1.9 , ≤ 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/net/ethernet/intel/igc/igc_main.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c",
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
            "include/net/libeth/xsk.h",
            "include/net/xdp_sock_drv.h",
            "net/xdp/xsk_buff_pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5fd121971912dee2f5af1efec64462ac722deb17",
              "status": "affected",
              "version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
              "versionType": "git"
            },
            {
              "lessThan": "0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba",
              "status": "affected",
              "version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
              "versionType": "git"
            },
            {
              "lessThan": "849b1664dbda1cf6c63e0fd4f9dec23782b8c851",
              "status": "affected",
              "version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d9d736c416c9a85f84e15435ba82a177262e745b",
              "versionType": "git"
            },
            {
              "lessThan": "6.15",
              "status": "affected",
              "version": "6.14.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_main.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c",
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
            "include/net/libeth/xsk.h",
            "include/net/xdp_sock_drv.h",
            "net/xdp/xsk_buff_pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.9",
              "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": "6.18.45",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.9",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.14.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: validate metadata when processing requests\n\nThe zero-copy path validates TX metadata while obtaining the descriptor\ncontext, then reads it again later when preparing the hardware request.\nUser space can change the metadata between those operations and bypass the\noriginal validation.\n\nValidate the metadata in xsk_tx_metadata_request() and use the resulting\nflags snapshot for every feature check. Read request fields once so all\nzero-copy drivers process only values observed after successful\nvalidation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-22T15:33:05.337Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5fd121971912dee2f5af1efec64462ac722deb17"
        },
        {
          "url": "https://git.kernel.org/stable/c/0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba"
        },
        {
          "url": "https://git.kernel.org/stable/c/849b1664dbda1cf6c63e0fd4f9dec23782b8c851"
        }
      ],
      "title": "xsk: validate metadata when processing requests",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74707",
    "datePublished": "2026-08-22T15:33:05.337Z",
    "dateReserved": "2026-08-15T05:44:03.927Z",
    "dateUpdated": "2026-08-22T15:33:05.337Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74707\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-22T16:16:45.433\",\"lastModified\":\"2026-08-22T16:16:45.433\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nxsk: validate metadata when processing requests\\n\\nThe zero-copy path validates TX metadata while obtaining the descriptor\\ncontext, then reads it again later when preparing the hardware request.\\nUser space can change the metadata between those operations and bypass the\\noriginal validation.\\n\\nValidate the metadata in xsk_tx_metadata_request() and use the resulting\\nflags snapshot for every feature check. Read request fields once so all\\nzero-copy drivers process only values observed after successful\\nvalidation.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/intel/igc/igc_main.c\",\"drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c\",\"drivers/net/ethernet/stmicro/stmmac/stmmac_main.c\",\"include/net/libeth/xsk.h\",\"include/net/xdp_sock_drv.h\",\"net/xdp/xsk_buff_pool.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ca4419f15abd19ba8be1e109661b60f9f5b6c9f0\",\"lessThan\":\"5fd121971912dee2f5af1efec64462ac722deb17\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ca4419f15abd19ba8be1e109661b60f9f5b6c9f0\",\"lessThan\":\"0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ca4419f15abd19ba8be1e109661b60f9f5b6c9f0\",\"lessThan\":\"849b1664dbda1cf6c63e0fd4f9dec23782b8c851\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d9d736c416c9a85f84e15435ba82a177262e745b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.14.2\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/intel/igc/igc_main.c\",\"drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c\",\"drivers/net/ethernet/stmicro/stmmac/stmmac_main.c\",\"include/net/libeth/xsk.h\",\"include/net/xdp_sock_drv.h\",\"net/xdp/xsk_buff_pool.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.45\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.9\",\"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/0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5fd121971912dee2f5af1efec64462ac722deb17\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/849b1664dbda1cf6c63e0fd4f9dec23782b8c851\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

FKIE_CVE-2026-74707

Vulnerability from fkie_nvd - Published: 2026-08-22 16:16 - Updated: 2026-08-22 16:16

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5fd121971912dee2f5af1efec64462ac722deb17
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/849b1664dbda1cf6c63e0fd4f9dec23782b8c851

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_main.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c",
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
            "include/net/libeth/xsk.h",
            "include/net/xdp_sock_drv.h",
            "net/xdp/xsk_buff_pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5fd121971912dee2f5af1efec64462ac722deb17",
              "status": "affected",
              "version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
              "versionType": "git"
            },
            {
              "lessThan": "0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba",
              "status": "affected",
              "version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
              "versionType": "git"
            },
            {
              "lessThan": "849b1664dbda1cf6c63e0fd4f9dec23782b8c851",
              "status": "affected",
              "version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d9d736c416c9a85f84e15435ba82a177262e745b",
              "versionType": "git"
            },
            {
              "lessThan": "6.15",
              "status": "affected",
              "version": "6.14.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_main.c",
            "drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c",
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
            "include/net/libeth/xsk.h",
            "include/net/xdp_sock_drv.h",
            "net/xdp/xsk_buff_pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.9",
              "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\nxsk: validate metadata when processing requests\n\nThe zero-copy path validates TX metadata while obtaining the descriptor\ncontext, then reads it again later when preparing the hardware request.\nUser space can change the metadata between those operations and bypass the\noriginal validation.\n\nValidate the metadata in xsk_tx_metadata_request() and use the resulting\nflags snapshot for every feature check. Read request fields once so all\nzero-copy drivers process only values observed after successful\nvalidation."
    }
  ],
  "id": "CVE-2026-74707",
  "lastModified": "2026-08-22T16:16:45.433",
  "metrics": {},
  "published": "2026-08-22T16:16:45.433",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5fd121971912dee2f5af1efec64462ac722deb17"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/849b1664dbda1cf6c63e0fd4f9dec23782b8c851"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-QVR7-GW3M-PMF7

Vulnerability from github – Published: 2026-08-22 18:30 – Updated: 2026-08-22 18:30

Details

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

xsk: validate metadata when processing requests

The zero-copy path validates TX metadata while obtaining the descriptor context, then reads it again later when preparing the hardware request. User space can change the metadata between those operations and bypass the original validation.

Validate the metadata in xsk_tx_metadata_request() and use the resulting flags snapshot for every feature check. Read request fields once so all zero-copy drivers process only values observed after successful validation.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-74707"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-22T16:16:45Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: validate metadata when processing requests\n\nThe zero-copy path validates TX metadata while obtaining the descriptor\ncontext, then reads it again later when preparing the hardware request.\nUser space can change the metadata between those operations and bypass the\noriginal validation.\n\nValidate the metadata in xsk_tx_metadata_request() and use the resulting\nflags snapshot for every feature check. Read request fields once so all\nzero-copy drivers process only values observed after successful\nvalidation.",
  "id": "GHSA-qvr7-gw3m-pmf7",
  "modified": "2026-08-22T18:30:29Z",
  "published": "2026-08-22T18:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74707"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fd121971912dee2f5af1efec64462ac722deb17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/849b1664dbda1cf6c63e0fd4f9dec23782b8c851"
    }
  ],
  "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-2026-74707 (GCVE-0-2026-74707)

FKIE_CVE-2026-74707

GHSA-QVR7-GW3M-PMF7

Tags

Sightings

Nomenclature