Vulnerability-Lookup

FKIE_CVE-2026-64355

Vulnerability from fkie_nvd - Published: 2026-07-25 10:17 - Updated: 2026-07-27 05:16

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the packet for all but the last destination. For native XDP, that clone path copies only the linear xdp_frame data, while fragmented frames keep skb_shared_info in tailroom outside the linear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but without valid frag metadata, and the later free path can interpret uninitialized tail data as skb_shared_info, leading to an out-of-bounds access during frame return. Reject fragmented native XDP frames in dev_map_enqueue_clone(). Add the same restriction to the generic XDP clone path in dev_map_redirect_clone(). Generic XDP represents fragmented packets as nonlinear skbs, and rejecting them here keeps clone-based broadcast support aligned between native and generic XDP.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/devmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "47baddc856ae7e93a565dd9deeb797999b179466",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "07a4c11ee8ef4abcb39d922e9e410ae269671cdf",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "bccbab36ff228e0825eb85d9b0f9b8434cd0a399",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "c5b4f5efcb55c1af3fe44ff712d31b7fb098a831",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "a9bb2d9c798cb62a4050a991c27b752770c33afe",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "51d07c12ca411e692c424ecdabf077f1e61a61be",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "aa496720618f1a6054f1c870bf10b4f6c99bf656",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/devmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "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\nbpf: Reject fragmented frames in devmap\n\nDevmap broadcast redirects clone the packet for all but the last\ndestination.\n\nFor native XDP, that clone path copies only the linear xdp_frame data,\nwhile fragmented frames keep skb_shared_info in tailroom outside the\nlinear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but\nwithout valid frag metadata, and the later free path can interpret\nuninitialized tail data as skb_shared_info, leading to an out-of-bounds\naccess during frame return.\n\nReject fragmented native XDP frames in dev_map_enqueue_clone().\n\nAdd the same restriction to the generic XDP clone path in\ndev_map_redirect_clone(). Generic XDP represents fragmented packets as\nnonlinear skbs, and rejecting them here keeps clone-based broadcast\nsupport aligned between native and generic XDP."
    }
  ],
  "id": "CVE-2026-64355",
  "lastModified": "2026-07-27T05:16:43.060",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-25T10:17:17.920",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-64355 (GCVE-0-2026-64355)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-07-27 04:59

Title

bpf: Reject fragmented frames in devmap

Summary

Severity

9.8 (Critical)


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

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/47baddc856ae7e93a…
https://git.kernel.org/stable/c/07a4c11ee8ef4abcb…
https://git.kernel.org/stable/c/bccbab36ff228e082…
https://git.kernel.org/stable/c/c5b4f5efcb55c1af3…
https://git.kernel.org/stable/c/a9bb2d9c798cb62a4…
https://git.kernel.org/stable/c/51d07c12ca411e692…
https://git.kernel.org/stable/c/aa496720618f1a605…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < 47baddc856ae7e93a565dd9deeb797999b179466 (git) Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < 07a4c11ee8ef4abcb39d922e9e410ae269671cdf (git) Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < bccbab36ff228e0825eb85d9b0f9b8434cd0a399 (git) Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < c5b4f5efcb55c1af3fe44ff712d31b7fb098a831 (git) Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < a9bb2d9c798cb62a4050a991c27b752770c33afe (git) Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < 51d07c12ca411e692c424ecdabf077f1e61a61be (git) Affected: e624d4ed4aa8cc3c69d1359b0aaea539203ed266 , < aa496720618f1a6054f1c870bf10b4f6c99bf656 (git)
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/devmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "47baddc856ae7e93a565dd9deeb797999b179466",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "07a4c11ee8ef4abcb39d922e9e410ae269671cdf",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "bccbab36ff228e0825eb85d9b0f9b8434cd0a399",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "c5b4f5efcb55c1af3fe44ff712d31b7fb098a831",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "a9bb2d9c798cb62a4050a991c27b752770c33afe",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "51d07c12ca411e692c424ecdabf077f1e61a61be",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            },
            {
              "lessThan": "aa496720618f1a6054f1c870bf10b4f6c99bf656",
              "status": "affected",
              "version": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/devmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.96",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.39",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.4",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2-rc1",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject fragmented frames in devmap\n\nDevmap broadcast redirects clone the packet for all but the last\ndestination.\n\nFor native XDP, that clone path copies only the linear xdp_frame data,\nwhile fragmented frames keep skb_shared_info in tailroom outside the\nlinear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but\nwithout valid frag metadata, and the later free path can interpret\nuninitialized tail data as skb_shared_info, leading to an out-of-bounds\naccess during frame return.\n\nReject fragmented native XDP frames in dev_map_enqueue_clone().\n\nAdd the same restriction to the generic XDP clone path in\ndev_map_redirect_clone(). Generic XDP represents fragmented packets as\nnonlinear skbs, and rejecting them here keeps clone-based broadcast\nsupport aligned between native and generic XDP."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T04:59:54.016Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466"
        },
        {
          "url": "https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf"
        },
        {
          "url": "https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe"
        },
        {
          "url": "https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656"
        }
      ],
      "title": "bpf: Reject fragmented frames in devmap",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64355",
    "datePublished": "2026-07-25T08:50:13.410Z",
    "dateReserved": "2026-07-19T15:36:31.782Z",
    "dateUpdated": "2026-07-27T04:59:54.016Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-64355

CVE-2026-64355 (GCVE-0-2026-64355)

Tags

Sightings

Nomenclature