CVE-2026-80717

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: validate Adaptation Indication parameter length The Adaptation Layer Indication parameter contains a fixed 32-bit Adaptation Code Point after its parameter header. However, sctp_verify_param() accepts a header-only parameter because the generic parameter walker only requires the header to be present. sctp_process_param() then reads adaptation_ind beyond the declared parameter. When the malformed parameter is last in an INIT, the read starts at the receive skb tail, and the value is copied into the state cookie returned in the INIT ACK. This may disclose four receive-buffer tail bytes. Require the declared parameter length to match the fixed structure size and abort the association through the existing invalid parameter length path otherwise.

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EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/17b412468c7a44f66a385bda48cdc1e94e39bd6d https://git.kernel.org/stable/c/4c92c601c061e5602db2edeea54fef74aa304027 https://git.kernel.org/stable/c/5fd7cfc708dfc988ae9920c21075e6121bc89926 https://git.kernel.org/stable/c/74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 https://git.kernel.org/stable/c/7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a https://git.kernel.org/stable/c/93942b5772e0eee4147d4799cc1b936ae12fa615 https://git.kernel.org/stable/c/bfa28cf99eb4d096c87da939f54233444d209ca5 https://git.kernel.org/stable/c/fa7861ddbe3b525b5d541c15c3953d3569e6eb0e

Frequently Asked Questions

What is CVE-2026-80717? +

In the Linux kernel, the following vulnerability has been resolved: sctp: validate Adaptation Indication parameter length The Adaptation Layer Indication parameter contains a fixed 32-bit Adaptation Code Point after its parameter header. However, sctp_verify_param() accepts a header-only parameter because the generic parameter walker only requires the header to be present. sctp_process_param() then reads adaptation_ind beyond the declared parameter. When the malformed parameter is last in an INIT, the read starts at the receive skb tail, and the value is copied into the state cookie returned in the INIT ACK. This may disclose four receive-buffer tail bytes. Require the declared parameter length to match the fixed structure size and abort the association through the existing invalid parameter length path otherwise.

How do I check if I'm vulnerable to CVE-2026-80717? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.