Bug 2564203 (CVE-2026-119299)

Summary: CVE-2026-119299 github.com/gopacket/gopacket: gopacket: Denial of Service via crafted SCTP packets
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in gopacket. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by sending specially crafted Stream Control Transmission Protocol (SCTP) packets. Due to missing validation of declared chunk lengths and field counts in the SCTP decoder, processing these malformed packets triggers an unhandled crash in the consuming application.
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Bug Depends On: 2565198    
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Description OSIDB Bzimport 2026-10-30 17:36:40 UTC 
gopacket provides packet processing capabilities for Go. Prior to 1.7.2, the SCTP chunk chain in layers/sctp.go passes attacker-controlled declared lengths and counts to decodeSCTPInit, decodeSCTPShutdown, decodeSCTPError, decodeSCTPSack, and decodeSCTPParameter without checking that each chunk contains the fixed fields, parameter TLVs, gap acknowledgements, or duplicate TSNs those sub-decoders read. A crafted SCTP segment can therefore cause out-of-bounds or inverted slice panics; the panic can terminate applications that use gopacket.DecodeOptions.SkipDecodeRecovery, direct registered decoders, or DecodingLayerParser with IgnorePanic enabled, while the default recovery-enabled APIs convert it to a per-packet decode error. This is the SCTP sub-decoder residual named but not remediated by CVE-2026-65819, whose version 1.7.1 changes bounded the generic dispatcher but left these per-type reads and loops unchecked. The impact is availability only, with no data disclosure, modification, or allocation amplification. This issue is fixed in version 1.7.2.