CVE Watch19 oct 2026

CVE-2026-68320

In the Linux kernel, the following vulnerability has been resolved: sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid s

CVSS

7.3

Alto

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 10 ago 2026 · Última mod.: 19 oct 2026 · CWE-787

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-09-272026-10-25

Descripción técnica

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.

Referencias oficiales

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