Description
In the Linux kernel, the following vulnerability has been resolved: sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid sctp_auth_ep_add_chunkid() uses SCTP_NUM_CHUNK_TYPES (20) as the capacity limit for ep->auth_chunk_list, allowing it to hold up to 20 chunk entries (param_hdr.length up to 24). However, the copy destination asoc->c.auth_chunks in struct sctp_cookie is only SCTP_AUTH_MAX_CHUNKS (16) entries (20 bytes). When more than 16 chunks are added, sctp_association_init() memcpy overflows the destination by up to 4 bytes. Fix by using SCTP_AUTH_MAX_CHUNKS as the capacity limit, matching the destination capacity.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1f485649f52929d9937b346a920a522a7363e202 to < 3d22a7da2e264f407c729f33a0a346ff76108bc6affected1f485649f52929d9937b346a920a522a7363e202 to < 6837c1c19a259518974cbc5a52017646e3906564affected1f485649f52929d9937b346a920a522a7363e202 to < 54bb4c03fa17cdcb157c26c33e60a78cf32960f5affected1f485649f52929d9937b346a920a522a7363e202 to < 5a365f1e423444c5da7eb689a8661633dad43e48affected1f485649f52929d9937b346a920a522a7363e202 to < 886e28e14ab655012779016d251fef53d103aa12affected1f485649f52929d9937b346a920a522a7363e202 to < 11092d79eb2b7c0068382f72fc2416d1786bb2e0affected1f485649f52929d9937b346a920a522a7363e202 to < b6ea3dda09eb4d5caf7bbc00f857688cf9e98255affected1f485649f52929d9937b346a920a522a7363e202 to < ff04b26794a16a8a879eb4fd2c02c2d6b03850e9affected
Linux Linux
Default version status: affected
2.6.24affected0 to < 2.6.24unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.148 to ≤ 6.6.*unaffected6.12.101 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3d22a7da2e264f407c729f33a0a346ff76108bc6 ↗
- https://git.kernel.org/stable/c/6837c1c19a259518974cbc5a52017646e3906564 ↗
- https://git.kernel.org/stable/c/54bb4c03fa17cdcb157c26c33e60a78cf32960f5 ↗
- https://git.kernel.org/stable/c/5a365f1e423444c5da7eb689a8661633dad43e48 ↗
- https://git.kernel.org/stable/c/886e28e14ab655012779016d251fef53d103aa12 ↗
- https://git.kernel.org/stable/c/11092d79eb2b7c0068382f72fc2416d1786bb2e0 ↗
- https://git.kernel.org/stable/c/b6ea3dda09eb4d5caf7bbc00f857688cf9e98255 ↗
- https://git.kernel.org/stable/c/ff04b26794a16a8a879eb4fd2c02c2d6b03850e9 ↗