PT-2026-90192 · Linux · Linux
CVE-2026-89476
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Published
2026-09-11
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Updated
2026-09-11
None
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In the Linux kernel, the following vulnerability has been resolved:
sctp: fix stream->outcnt underflow on duplicate RECONF responses
A cached RECONF chunk may contain more than one request parameter. A
duplicate response can therefore find and process the same ADD OUT request
again while another parameter is still outstanding, rolling back outcnt
twice and possibly underflowing it.
Track outstanding request types as bits and clear each bit after its first
response. Later responses for the same request are then ignored.
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Related Identifiers
Affected Products
Linux