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.
How to fix
- Linux Linuxfa7861ddbe3b525b5d541c15c3953d3569e6eb0e, 4c92c601c061e5602db2edeea54fef74aa304027, 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a, 93942b5772e0eee4147d4799cc1b936ae12fa615, 5fd7cfc708dfc988ae9920c21075e6121bc89926, 17b412468c7a44f66a385bda48cdc1e94e39bd6d, bfa28cf99eb4d096c87da939f54233444d209ca5, 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < fa7861ddbe3b525b5d541c15c3953d3569e6eb0e, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 4c92c601c061e5602db2edeea54fef74aa304027, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 93942b5772e0eee4147d4799cc1b936ae12fa615, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 5fd7cfc708dfc988ae9920c21075e6121bc89926, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 17b412468c7a44f66a385bda48cdc1e94e39bd6d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < bfa28cf99eb4d096c87da939f54233444d209ca5, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17, 2.6.12 | fa7861ddbe3b525b5d541c15c3953d3569e6eb0e, 4c92c601c061e5602db2edeea54fef74aa304027, 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a, 93942b5772e0eee4147d4799cc1b936ae12fa615, 5fd7cfc708dfc988ae9920c21075e6121bc89926, 17b412468c7a44f66a385bda48cdc1e94e39bd6d, bfa28cf99eb4d096c87da939f54233444d209ca5, 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 |
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