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CVE-2026-80717

HIGHCVSS 7.5/10EPSS 0.16%

Last modified

CVE-2026-80717 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
0.16%

5.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < fa7861ddbe3b525b5d541c15c3953d3569e6eb0e; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4c92c601c061e5602db2edeea54fef74aa304027; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 93942b5772e0eee4147d4799cc1b936ae12fa615; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5fd7cfc708dfc988ae9920c21075e6121bc89926; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 17b412468c7a44f66a385bda48cdc1e94e39bd6d; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < bfa28cf99eb4d096c87da939f54233444d209ca5; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17
LinuxLinux2.6.12

References

Timeline

Published
Last Modified
Status
Received

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 severe is CVE-2026-80717?
CVE-2026-80717 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80717?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST