Vulnerability-Lookup

GHSA-22JC-J6Q2-9WV9

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

ipvs: fix reversed sequence option serialization

hton_seq() expects the host-order source first and the unaligned network-order destination second. The version 1 sync sender passes these arguments in reverse for both sequence blocks. This leaves 24 bytes of the kmalloc-backed message unwritten. It may disclose stale heap data and replace the live connection sequence state with values read from the buffer.

Pass the connection sequence state as the source and the message payload as the destination for both blocks.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98078"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:37Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix reversed sequence option serialization\n\nhton_seq() expects the host-order source first and the unaligned\nnetwork-order destination second. The version 1 sync sender passes these\narguments in reverse for both sequence blocks. This leaves 24 bytes of the\nkmalloc-backed message unwritten. It may disclose stale heap data and\nreplace the live connection sequence state with values read from the\nbuffer.\n\nPass the connection sequence state as the source and the message payload as\nthe destination for both blocks.",
  "id": "GHSA-22jc-j6q2-9wv9",
  "modified": "2026-09-25T12:31:36Z",
  "published": "2026-09-25T12:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98078"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/524599714558da83747c04952d378155c69f5b6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b04578b74f2d3755548fe9e829e3b2a6c6f966a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de6cc6ec7932bc530f2bb92005dac9123d50659c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98078 (GCVE-0-2026-98078)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:24 – Updated: 2026-09-25 10:24

Title

ipvs: fix reversed sequence option serialization

Summary

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix reversed sequence option serialization hton_seq() expects the host-order source first and the unaligned network-order destination second. The version 1 sync sender passes these arguments in reverse for both sequence blocks. This leaves 24 bytes of the kmalloc-backed message unwritten. It may disclose stale heap data and replace the live connection sequence state with values read from the buffer. Pass the connection sequence state as the source and the message payload as the destination for both blocks.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/e1c9f9446d3eaae32…
https://git.kernel.org/stable/c/524599714558da837…
https://git.kernel.org/stable/c/de6cc6ec7932bc530…
https://git.kernel.org/stable/c/b04578b74f2d37555…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 986a075795339c5ea1122ce9290dfd5504252eb0 , < e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec (git) Affected: 986a075795339c5ea1122ce9290dfd5504252eb0 , < 524599714558da83747c04952d378155c69f5b6b (git) Affected: 986a075795339c5ea1122ce9290dfd5504252eb0 , < de6cc6ec7932bc530f2bb92005dac9123d50659c (git) Affected: 986a075795339c5ea1122ce9290dfd5504252eb0 , < b04578b74f2d3755548fe9e829e3b2a6c6f966a1 (git)
Linux	Linux	Affected: 2.6.39 Unaffected: 0 , < 2.6.39 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec",
              "status": "affected",
              "version": "986a075795339c5ea1122ce9290dfd5504252eb0",
              "versionType": "git"
            },
            {
              "lessThan": "524599714558da83747c04952d378155c69f5b6b",
              "status": "affected",
              "version": "986a075795339c5ea1122ce9290dfd5504252eb0",
              "versionType": "git"
            },
            {
              "lessThan": "de6cc6ec7932bc530f2bb92005dac9123d50659c",
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            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.39"
            },
            {
              "lessThan": "2.6.39",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix reversed sequence option serialization\n\nhton_seq() expects the host-order source first and the unaligned\nnetwork-order destination second. The version 1 sync sender passes these\narguments in reverse for both sequence blocks. This leaves 24 bytes of the\nkmalloc-backed message unwritten. It may disclose stale heap data and\nreplace the live connection sequence state with values read from the\nbuffer.\n\nPass the connection sequence state as the source and the message payload as\nthe destination for both blocks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:24:16.294Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      ],
      "title": "ipvs: fix reversed sequence option serialization",
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    "cveId": "CVE-2026-98078",
    "datePublished": "2026-09-25T10:24:16.294Z",
    "dateReserved": "2026-09-25T10:19:56.074Z",
    "dateUpdated": "2026-09-25T10:24:16.294Z",
    "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.

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.
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GHSA-22JC-J6Q2-9WV9

CVE-2026-98078 (GCVE-0-2026-98078)

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