CVE-2026-68320
Detail
Received This CVE record has recently been published to the CVE List and has been included within the NVD dataset.
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
NVD assessment
not yet provided.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
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Change History
4 change records found show changes
CVE Modified by kernel.org
8/19/2026 1:20:42 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/3d22a7da2e264f407c729f33a0a346ff76108bc6
Added
Reference
https://git.kernel.org/stable/c/54bb4c03fa17cdcb157c26c33e60a78cf32960f5
Added
Reference
https://git.kernel.org/stable/c/6837c1c19a259518974cbc5a52017646e3906564
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"5a365f1e423444c5da7eb689a8661633dad43e48","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"886e28e14ab655012779016d251fef53d103aa12","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"11092d79eb2b7c0068382f72fc2416d1786bb2e0","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"b6ea3dda09eb4d5caf7bbc00f857688cf9e98255","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"ff04b26794a16a8a879eb4fd2c02c2d6b03850e9","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Record truncated, showing 2048 of 2447 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"3d22a7da2e264f407c729f33a0a346ff76108bc6","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"6837c1c19a259518974cbc5a52017646e3906564","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"54bb4c03fa17cdcb157c26c33e60a78cf32960f5","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"5a365f1e423444c5da7eb689a8661633dad43e48","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"886e28e14ab655012779016d251fef53d103aa12","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"11092d79eb2b7c0068382f72fc2416d1786bb2e0","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"b6ea3dda09eb4d5caf7bbc00f857688cf9e98255","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"ff04b26794a16a8a879eb4fd2c02c2d6b03850e9","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status"
CVE Modified by kernel.org
8/17/2026 1:18:34 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"5a365f1e423444c5da7eb689a8661633dad43e48","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"886e28e14ab655012779016d251fef53d103aa12","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"11092d79eb2b7c0068382f72fc2416d1786bb2e0","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"b6ea3dda09eb4d5caf7bbc00f857688cf9e98255","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"ff04b26794a16a8a879eb4fd2c02c2d6b03850e9","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc5","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"5a365f1e423444c5da7eb689a8661633dad43e48","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"886e28e14ab655012779016d251fef53d103aa12","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"11092d79eb2b7c0068382f72fc2416d1786bb2e0","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"b6ea3dda09eb4d5caf7bbc00f857688cf9e98255","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"ff04b26794a16a8a879eb4fd2c02c2d6b03850e9","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
CVE Modified by kernel.org
8/13/2026 7:17:30 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
New CVE Received from kernel.org
8/10/2026 9:20:22 AM
Action
Type
Old Value
New Value
Added
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.
Added
Reference
https://git.kernel.org/stable/c/11092d79eb2b7c0068382f72fc2416d1786bb2e0
Added
Reference
https://git.kernel.org/stable/c/5a365f1e423444c5da7eb689a8661633dad43e48
Added
Reference
https://git.kernel.org/stable/c/886e28e14ab655012779016d251fef53d103aa12
Added
Reference
https://git.kernel.org/stable/c/b6ea3dda09eb4d5caf7bbc00f857688cf9e98255
Added
Reference
https://git.kernel.org/stable/c/ff04b26794a16a8a879eb4fd2c02c2d6b03850e9
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"5a365f1e423444c5da7eb689a8661633dad43e48","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"886e28e14ab655012779016d251fef53d103aa12","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"11092d79eb2b7c0068382f72fc2416d1786bb2e0","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"b6ea3dda09eb4d5caf7bbc00f857688cf9e98255","versionType":"git","status":"affected"},{"version":"1f485649f52929d9937b346a920a522a7363e202","lessThan":"ff04b26794a16a8a879eb4fd2c02c2d6b03850e9","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/sctp/auth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc5","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Quick Info
CVE Dictionary Entry: CVE-2026-68320 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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