Answer in brief
CVE-2026-68320 records a High severity (CVSS 7.3) vulnerability in sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1f485649f52929d9937b346a920a522a7363e202 <5a365f1e423444c5da7eb689a8661633dad43e48 || >=1f485649f52929d9937b346a920a522a7363e202 <886e28e14ab655012779016d251fef53d103aa12 || >=1f485649f52929d9937b346a920a522a7363e202 <11092d79eb2b7c0068382f72fc2416d1786bb2e0 || >=1f485649f52929d9937b346a920a522a7363e202 <b6ea3dda09eb4d5caf7bbc00f857688cf9e98255 || >=1f485649f52929d9937b346a920a522a7363e202 <ff04b26794a16a8a879eb4fd2c02c2d6b03850e9 | 5a365f1e423444c5da7eb689a8661633dad43e48, 886e28e14ab655012779016d251fef53d103aa12, 11092d79eb2b7c0068382f72fc2416d1786bb2e0, b6ea3dda09eb4d5caf7bbc00f857688cf9e98255, ff04b26794a16a8a879eb4fd2c02c2d6b03850e9 |
| Linux/Linuxgeneric | 2.6.24 | Not reported |
| Linux/Linuxgeneric | >=1f485649f52929d9937b346a920a522a7363e202 <3d22a7da2e264f407c729f33a0a346ff76108bc6 || >=1f485649f52929d9937b346a920a522a7363e202 <6837c1c19a259518974cbc5a52017646e3906564 || >=1f485649f52929d9937b346a920a522a7363e202 <54bb4c03fa17cdcb157c26c33e60a78cf32960f5 || >=1f485649f52929d9937b346a920a522a7363e202 <5a365f1e423444c5da7eb689a8661633dad43e48 || >=1f485649f52929d9937b346a920a522a7363e202 <886e28e14ab655012779016d251fef53d103aa12 || >=1f485649f52929d9937b346a920a522a7363e202 <11092d79eb2b7c0068382f72fc2416d1786bb2e0 || >=1f485649f52929d9937b346a920a522a7363e202 <b6ea3dda09eb4d5caf7bbc00f857688cf9e98255 || >=1f485649f52929d9937b346a920a522a7363e202 <ff04b26794a16a8a879eb4fd2c02c2d6b03850e9 | 3d22a7da2e264f407c729f33a0a346ff76108bc6, 6837c1c19a259518974cbc5a52017646e3906564, 54bb4c03fa17cdcb157c26c33e60a78cf32960f5, 5a365f1e423444c5da7eb689a8661633dad43e48, 886e28e14ab655012779016d251fef53d103aa12, 11092d79eb2b7c0068382f72fc2416d1786bb2e0, b6ea3dda09eb4d5caf7bbc00f857688cf9e98255, ff04b26794a16a8a879eb4fd2c02c2d6b03850e9 |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.