Vulnerability-Lookup

FKIE_CVE-2026-98322

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-19 10:18

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_nat: fully initialise new_addr in netmap setup nft_nat_setup_netmap() builds the mapped address in an on-stack union nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip member and the loop runs a single 32-bit iteration, but it then copies the whole 16-byte union into range->min_addr and range->max_addr, so the upper 12 bytes reach nf_nat_setup_info() uninitialised. KMSAN reports an uninit-value in nf_nat_setup_info() reached from nft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected. Zero-initialise new_addr.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_nat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "29365695842db0a97b701a43a09fad1b4f7ecf3e",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "7b9380c38c2fd2189416fa602bdbc5c8523b84b2",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "eb2030137dba3b59cbb5057a33af70488d6bc231",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "e4982c489ee359162eee3ece1fb36082648464a5",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "161f5860c92a8ec80b6bdff16e79d70dcd8afc5a",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "0ce42c7b84032335abff9eac43762e4ca8224451",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "1c43f5db482f74b41987c39c9c375a5e767556eb",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "d313499df66159b4b7971d760d16729598ab7e5a",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_nat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "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\nnetfilter: nft_nat: fully initialise new_addr in netmap setup\n\nnft_nat_setup_netmap() builds the mapped address in an on-stack\nunion nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip\nmember and the loop runs a single 32-bit iteration, but it then copies\nthe whole 16-byte union into range-\u003emin_addr and range-\u003emax_addr, so the\nupper 12 bytes reach nf_nat_setup_info() uninitialised.\n\nKMSAN reports an uninit-value in nf_nat_setup_info() reached from\nnft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected.\n\nZero-initialise new_addr."
    }
  ],
  "id": "CVE-2026-98322",
  "lastModified": "2026-10-19T10:18:34.350",
  "metrics": {},
  "published": "2026-10-06T09:18:24.243",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-98322 (GCVE-0-2026-98322)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:46 – Updated: 2026-10-06 08:46

Title

netfilter: nft_nat: fully initialise new_addr in netmap setup

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/29365695842db0a97…
https://git.kernel.org/stable/c/7b9380c38c2fd2189…
https://git.kernel.org/stable/c/eb2030137dba3b59c…
https://git.kernel.org/stable/c/e4982c489ee359162…
https://git.kernel.org/stable/c/161f5860c92a8ec80…
https://git.kernel.org/stable/c/0ce42c7b84032335a…
https://git.kernel.org/stable/c/1c43f5db482f74b41…
https://git.kernel.org/stable/c/d313499df66159b4b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < 29365695842db0a97b701a43a09fad1b4f7ecf3e (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < 7b9380c38c2fd2189416fa602bdbc5c8523b84b2 (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < eb2030137dba3b59cbb5057a33af70488d6bc231 (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < e4982c489ee359162eee3ece1fb36082648464a5 (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < 161f5860c92a8ec80b6bdff16e79d70dcd8afc5a (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < 0ce42c7b84032335abff9eac43762e4ca8224451 (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < 1c43f5db482f74b41987c39c9c375a5e767556eb (git) Affected: 3ff7ddb1353da9b535e65702704cbadea1da9a00 , < d313499df66159b4b7971d760d16729598ab7e5a (git)
Linux	Linux	Affected: 5.8 Unaffected: 0 , < 5.8 (semver) Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.54 , ≤ 6.18.* (semver) Unaffected: 7.2.8 , ≤ 7.2.* (semver) Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_nat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "29365695842db0a97b701a43a09fad1b4f7ecf3e",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "7b9380c38c2fd2189416fa602bdbc5c8523b84b2",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "eb2030137dba3b59cbb5057a33af70488d6bc231",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "e4982c489ee359162eee3ece1fb36082648464a5",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "161f5860c92a8ec80b6bdff16e79d70dcd8afc5a",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "0ce42c7b84032335abff9eac43762e4ca8224451",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "1c43f5db482f74b41987c39c9c375a5e767556eb",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            },
            {
              "lessThan": "d313499df66159b4b7971d760d16729598ab7e5a",
              "status": "affected",
              "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_nat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.54",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.8",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc4",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_nat: fully initialise new_addr in netmap setup\n\nnft_nat_setup_netmap() builds the mapped address in an on-stack\nunion nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip\nmember and the loop runs a single 32-bit iteration, but it then copies\nthe whole 16-byte union into range-\u003emin_addr and range-\u003emax_addr, so the\nupper 12 bytes reach nf_nat_setup_info() uninitialised.\n\nKMSAN reports an uninit-value in nf_nat_setup_info() reached from\nnft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected.\n\nZero-initialise new_addr."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:46:16.346Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451"
        },
        {
          "url": "https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a"
        }
      ],
      "title": "netfilter: nft_nat: fully initialise new_addr in netmap setup",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98322",
    "datePublished": "2026-10-06T08:46:16.346Z",
    "dateReserved": "2026-09-25T10:25:14.340Z",
    "dateUpdated": "2026-10-06T08:46:16.346Z",
    "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.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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FKIE_CVE-2026-98322

CVE-2026-98322 (GCVE-0-2026-98322)

Tags

Sightings

Nomenclature

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