CVE-2026-68141
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:
net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()
afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.
If the allocation fails, nsk is NULL.
The connection-refused path is entered when the listen state check
fails, the accept backlog is full, or nsk is NULL. The code
unconditionally calls iucv_sock_kill(nsk) in that path.
iucv_sock_kill() does not accept a NULL socket pointer and immediately
dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL,
calling iucv_sock_kill(nsk) results in a NULL pointer dereference.
Only call iucv_sock_kill() when a child socket was successfully
allocated.
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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 1:20:31 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/07e21deb3664001995e0a456dd627ab7dbe127ec
Added
Reference
https://git.kernel.org/stable/c/6a1eb5b46c19073f8153b7e2c19b408cf353aaf1
Added
Reference
https://git.kernel.org/stable/c/c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"8bb111f87ded6acb9837ec9b45d6f02cda94c51f","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"46453b16f38ec7147351f7447e2aec6ea330f7b3","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"33736ff5e7c97d3348ce812e8bd2e125d840743c","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"0e857185591fe79934427c9c0c1c31dc776be134","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"47a5116e56a6b6fe1e909f244e39cd0fc26ceee4","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","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/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"6a1eb5b46c19073f8153b7e2c19b408cf353aaf1","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"07e21deb3664001995e0a456dd627ab7dbe127ec","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"8bb111f87ded6acb9837ec9b45d6f02cda94c51f","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"46453b16f38ec7147351f7447e2aec6ea330f7b3","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"33736ff5e7c97d3348ce812e8bd2e125d840743c","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"0e857185591fe79934427c9c0c1c31dc776be134","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"47a5116e56a6b6fe1e909f244e39cd0fc26ceee4","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","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 1:18:14 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"8bb111f87ded6acb9837ec9b45d6f02cda94c51f","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"46453b16f38ec7147351f7447e2aec6ea330f7b3","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"33736ff5e7c97d3348ce812e8bd2e125d840743c","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"0e857185591fe79934427c9c0c1c31dc776be134","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"47a5116e56a6b6fe1e909f244e39cd0fc26ceee4","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","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/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"8bb111f87ded6acb9837ec9b45d6f02cda94c51f","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"46453b16f38ec7147351f7447e2aec6ea330f7b3","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"33736ff5e7c97d3348ce812e8bd2e125d840743c","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"0e857185591fe79934427c9c0c1c31dc776be134","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"47a5116e56a6b6fe1e909f244e39cd0fc26ceee4","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","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 7:17:19 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
New CVE Received from kernel.org
8/10/2026 9:19:59 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()
afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.
If the allocation fails, nsk is NULL.
The connection-refused path is entered when the listen state check
fails, the accept backlog is full, or nsk is NULL. The code
unconditionally calls iucv_sock_kill(nsk) in that path.
iucv_sock_kill() does not accept a NULL socket pointer and immediately
dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL,
calling iucv_sock_kill(nsk) results in a NULL pointer dereference.
Only call iucv_sock_kill() when a child socket was successfully
allocated.
Added
Reference
https://git.kernel.org/stable/c/0e857185591fe79934427c9c0c1c31dc776be134
Added
Reference
https://git.kernel.org/stable/c/33736ff5e7c97d3348ce812e8bd2e125d840743c
Added
Reference
https://git.kernel.org/stable/c/46453b16f38ec7147351f7447e2aec6ea330f7b3
Added
Reference
https://git.kernel.org/stable/c/47a5116e56a6b6fe1e909f244e39cd0fc26ceee4
Added
Reference
https://git.kernel.org/stable/c/8bb111f87ded6acb9837ec9b45d6f02cda94c51f
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"8bb111f87ded6acb9837ec9b45d6f02cda94c51f","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"46453b16f38ec7147351f7447e2aec6ea330f7b3","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"33736ff5e7c97d3348ce812e8bd2e125d840743c","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"0e857185591fe79934427c9c0c1c31dc776be134","versionType":"git","status":"affected"},{"version":"3881ac441f642d56503818123446f7298442236b","lessThan":"47a5116e56a6b6fe1e909f244e39cd0fc26ceee4","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","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-2026-68141 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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