by Kastro CVE-2026-15422
illumos illumos-gate — SCTP needs to better-check INIT ACK chunk parameters
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
illumos-gatea5407c02d5ed61b29481b9b71f1307d7ebec9e5c – < 53a3efdeff8e6745bbfb69c5360f94962fb79e7553a3efdeff8e6745bbfb69c5360f94962fb79e75CNA
OmniOSr151058 – < r151058jr151058jCNA
OmniOSr151056 – < r151056ajr151056ajCNA
OmniOSr151054 – < r151054bjr151054bjCNA
OmniOSany – < r151054r151054CNA
SmartOSany – < 202060709202060709CNA
Scores by source
illumos (CNA)9.1CVSS: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
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total