Vulnerability-Lookup

GHSA-7FJ7-GPRR-X7FM

Vulnerability from github – Published: 2026-07-16 21:30 – Updated: 2026-07-16 21:30

Details

The illumos SCTP inbound path performs association lookup for INIT ACK chunks without adequately validating the address parameters carried in the chunk. Since this lookup runs during packet classification (i.e. before SCTP integrity checks or IPsec policy are applied) a remote, unauthenticated attacker can send a crafted SCTP INIT ACK packet with malformed address parameters to cause an out-of-bounds access and kernel heap corruption, which may lead to remote code execution. The flaw has existed since 2010 (illumos-gate commit a5407c02), and affects any illumos distribution prior to illumos-gate commit 53a3efde.

Severity

9.1 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/S:P/AU:Y/R:U/V:C/RE:H/U:Red

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{
  "affected": [],
  "aliases": [
    "CVE-2026-15422"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-16T20:16:44Z",
    "severity": "CRITICAL"
  },
  "details": "The illumos SCTP inbound path performs association lookup for INIT ACK chunks without adequately validating the address parameters carried in the chunk. Since this lookup runs during packet classification (i.e. before SCTP integrity checks or IPsec policy are applied) a remote, unauthenticated attacker can send a crafted SCTP INIT ACK packet with malformed address parameters to cause an out-of-bounds access and kernel heap corruption, which may lead to remote code execution. The flaw has existed since 2010 (illumos-gate commit a5407c02), and affects any illumos distribution prior to illumos-gate commit 53a3efde.",
  "id": "GHSA-7fj7-gprr-x7fm",
  "modified": "2026-07-16T21:30:38Z",
  "published": "2026-07-16T21:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15422"
    },
    {
      "type": "WEB",
      "url": "https://github.com/illumos/illumos-gate/commit/53a3efdeff8e6745bbfb69c5360f94962fb79e75"
    },
    {
      "type": "WEB",
      "url": "https://illumos.org/issues/18117"
    },
    {
      "type": "WEB",
      "url": "https://illumos.topicbox.com/groups/developer/Ta1a8e2e1f7f928df/18117-sctp-needs-to-better-check-init-ack-chunk-parameters"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:U/V:C/RE:H/U:Red",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-15422 (GCVE-0-2026-15422)

Vulnerability from cvelistv5 – Published: 2026-07-16 19:29 – Updated: 2026-07-17 13:47

Title

SCTP needs to better-check INIT ACK chunk parameters

Summary

Severity

9.1 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/S:P/AU:Y/R:U/V:C/RE:H/U:Red

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-17 13:47 UTC

CWE

CWE-122 - Heap-based buffer overflow
CWE-787 - Out-of-bounds write

Assigner

illumos CNA under the redhat root

CNA scorecard – unranked: 9 records in the last 180 days, 10 needed details

References

3 references

URL	Tags
https://illumos.topicbox.com/groups/developer/Ta1…	mailing-list
https://illumos.org/issues/18117	issue-tracking
https://github.com/illumos/illumos-gate/commit/53…	patch

Impacted products

3 products

Vendor	Product	Version
illumos	illumos-gate	Affected: a5407c02d5ed61b29481b9b71f1307d7ebec9e5c , < 53a3efdeff8e6745bbfb69c5360f94962fb79e75 (git)
OmniOS	OmniOS	Affected: r151058 , < r151058j (custom) Affected: r151056 , < r151056aj (custom) Affected: r151054 , < r151054bj (custom) Affected: any , < r151054 (custom)
Triton Data Center	SmartOS	Affected: any , < 202060709 (custom)

Date Public

2026-07-08 18:00

Credits

Sourque Dan McDonald

Show details on NVD website

JSON

To clipboard

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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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