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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 08:16

Updated : 2026-08-29 07:16

NVD link : CVE-2026-80717

Mitre link : CVE-2026-80717

CVE.ORG link : CVE-2026-80717

JSON object : View

Products Affected

No product.

CWE

No CWE.

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However,\nsctp_verify_param() accepts a header-only parameter because the generic\nparameter walker only requires the header to be present.\n\nsctp_process_param() then reads adaptation_ind beyond the declared\nparameter. When the malformed parameter is last in an INIT, the read\nstarts at the receive skb tail, and the value is copied into the state\ncookie returned in the INIT ACK. This may disclose four receive-buffer\ntail bytes.\n\nRequire the declared parameter length to match the fixed structure size\nand abort the association through the existing invalid parameter length\npath otherwise."}], "lastModified": "2026-08-29T07:16:53.177", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}