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CVE-2026-15422

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d0497a63816b1202726f3bdaf884ffa56dc79aa191f7637ab470c72e070075da
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"affected","product":"OmniOS","vendor":"OmniOS","versions":[{"changes":[{"at":"r151058j","status":"unaffected"}],"lessThan":"r151058j","status":"affected","version":"r151058","versionType":"custom"},{"changes":[{"at":"r151056aj","status":"unaffected"}],"lessThan":"r151056aj","status":"affected","version":"r151056","versionType":"custom"},{"changes":[{"at":"r151054bj","status":"unaffected"}],"lessThan":"r151054bj","status":"affected","version":"r151054","versionType":"custom"},{"lessThan":"r151054","status":"affected","version":"any","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/affected/1

{"defaultStatus":"affected","modules":["kernel","SCTP"],"product":"illumos-gate","programFiles":["usr/src/uts/common/inet/sctp/sctp_hash.c"],"repo":"https://github.com/illumos/illumos-gate","vendor":"illumos","versions":[{"changes":[{"at":"53a3efdeff8e6745bbfb69c5360f94962fb79e75","status":"unaffected"}],"lessThan":"53a3efdeff8e6745bbfb69c5360f94962fb79e75","status":"affected","version":"a5407c02d5ed61b29481b9b71f1307d7ebec9e5c","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"SmartOS","vendor":"Triton Data Center","versions":[{"changes":[{"at":"20260709","status":"unaffected"}],"lessThan":"202060709","status":"affected","version":"any","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/affected/2
cwe · 2 assertions

{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-122","description":"CWE-122 Heap-based buffer overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

3 source assertions
{"defaultStatus":"affected","product":"OmniOS","vendor":"OmniOS","versions":[{"changes":[{"at":"r151058j","status":"unaffected"}],"lessThan":"r151058j","status":"affected","version":"r151058","versionType":"custom"},{"changes":[{"at":"r151056aj","status":"unaffected"}],"lessThan":"r151056aj","status":"affected","version":"r151056","versionType":"custom"},{"changes":[{"at":"r151054bj","status":"unaffected"}],"lessThan":"r151054bj","status":"affected","version":"r151054","versionType":"custom"},{"lessThan":"r151054","status":"affected","version":"any","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/affected/1
{"defaultStatus":"affected","modules":["kernel","SCTP"],"product":"illumos-gate","programFiles":["usr/src/uts/common/inet/sctp/sctp_hash.c"],"repo":"https://github.com/illumos/illumos-gate","vendor":"illumos","versions":[{"changes":[{"at":"53a3efdeff8e6745bbfb69c5360f94962fb79e75","status":"unaffected"}],"lessThan":"53a3efdeff8e6745bbfb69c5360f94962fb79e75","status":"affected","version":"a5407c02d5ed61b29481b9b71f1307d7ebec9e5c","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"SmartOS","vendor":"Triton Data Center","versions":[{"changes":[{"at":"20260709","status":"unaffected"}],"lessThan":"202060709","status":"affected","version":"any","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"YES","Recovery":"USER","Safety":"PRESENT","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.1,"baseSeverity":"CRITICAL","exploitMaturity":"UNREPORTED","privilegesRequired":"NONE","providerUrgency":"RED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"CONCENTRATED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentiality…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-122","description":"CWE-122 Heap-based buffer overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["patch"],"url":"https://github.com/illumos/illumos-gate/commit/53a3efdeff8e6745bbfb69c5360f94962fb79e75"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/references/2
{"tags":["issue-tracking"],"url":"https://illumos.org/issues/18117"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/references/1
{"tags":["mailing-list"],"url":"https://illumos.topicbox.com/groups/developer/Ta1a8e2e1f7f928df/18117-sctp-needs-to-better-check-init-ack-chunk-parameters"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1603d0810759c5ec44999a592a823916eebdc868f59f11aa8281513df45ccd7c · sha256:2f6eaf025668ad8e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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