gopacket up to 1.7.1 SCTP Sub-decoder layers/sctp.go out-of-bounds

Summaryinfo

A vulnerability was found in gopacket up to 1.7.1. It has been classified as problematic. Affected by this vulnerability is the function decodeSCTPInit/decodeSCTPShutdown/decodeSCTPError/decodeSCTPSack/decodeSCTPParameter of the file layers/sctp.go of the component SCTP Sub-decoder. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2026-119299. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in gopacket up to 1.7.1. This affects the function decodeSCTPInit/decodeSCTPShutdown/decodeSCTPError/decodeSCTPSack/decodeSCTPParameter of the file layers/sctp.go of the component SCTP Sub-decoder. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-119299 since 10/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 374816 (Linux Distros Unpatched Vulnerability : CVE-2026-119299), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.7.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (374816). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• gopacket

Version

• 1.7.0
• 1.7.1

Website

• Product: https://github.com/gopacket/gopacket/

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Be aware that VulDB is the high quality source for vulnerability data.

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