CVE-2026-68140
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/iucv: fix use-after-free of a severed iucv_path
af_iucv queues not-yet-received message notifications on iucv->message_q,
each holding a raw pointer to the connection's iucv_path. When the peer
severs the connection, iucv_sever_path() frees that path with
iucv_path_free() but leaves the notifications queued. A later recvmsg()
drains message_q via iucv_process_message_q() and hands the stale path to
message_receive() -- a use-after-free of the freed iucv_path.
Drop the queued notifications when the path is severed; once the path is
gone they can no longer be received. This also frees the notifications
leaked when a socket is closed with messages still queued.
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:A/AC:L/PR:N/UI:N/S:U/C:H/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 1:20:31 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/5f08c5e50bcb4680069bd3f9edd5728308816ded
Added
Reference
https://git.kernel.org/stable/c/99ddb33748698296a6f17b9b34aa3d16a406bb3c
Added
Reference
https://git.kernel.org/stable/c/c24faf11bd31bfe0500aca12cbdd5a573a954a5d
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":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"23658b350b4107e8292045c2044983fd426fa15d","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"a5bbaddf69853117f28173c3f5c8fc14c6b2ec82","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"900cd6d8119b7f3ae5c4bf82f922ff5957df43db","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"f579582c03ed526281a8450159baf1d35099a85f","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a","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":"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 2453 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":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"5f08c5e50bcb4680069bd3f9edd5728308816ded","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"c24faf11bd31bfe0500aca12cbdd5a573a954a5d","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"99ddb33748698296a6f17b9b34aa3d16a406bb3c","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"23658b350b4107e8292045c2044983fd426fa15d","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"a5bbaddf69853117f28173c3f5c8fc14c6b2ec82","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"900cd6d8119b7f3ae5c4bf82f922ff5957df43db","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"f579582c03ed526281a8450159baf1d35099a85f","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a","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":"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","s
CVE Modified by kernel.org
8/17/2026 1:18:13 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":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"23658b350b4107e8292045c2044983fd426fa15d","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"a5bbaddf69853117f28173c3f5c8fc14c6b2ec82","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"900cd6d8119b7f3ae5c4bf82f922ff5957df43db","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"f579582c03ed526281a8450159baf1d35099a85f","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a","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":"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/iucv/af_iucv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"23658b350b4107e8292045c2044983fd426fa15d","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"a5bbaddf69853117f28173c3f5c8fc14c6b2ec82","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"900cd6d8119b7f3ae5c4bf82f922ff5957df43db","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"f579582c03ed526281a8450159baf1d35099a85f","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a","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":"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 7:17:19 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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/iucv: fix use-after-free of a severed iucv_path
af_iucv queues not-yet-received message notifications on iucv->message_q,
each holding a raw pointer to the connection's iucv_path. When the peer
severs the connection, iucv_sever_path() frees that path with
iucv_path_free() but leaves the notifications queued. A later recvmsg()
drains message_q via iucv_process_message_q() and hands the stale path to
message_receive() -- a use-after-free of the freed iucv_path.
Drop the queued notifications when the path is severed; once the path is
gone they can no longer be received. This also frees the notifications
leaked when a socket is closed with messages still queued.
Added
Reference
https://git.kernel.org/stable/c/23658b350b4107e8292045c2044983fd426fa15d
Added
Reference
https://git.kernel.org/stable/c/900cd6d8119b7f3ae5c4bf82f922ff5957df43db
Added
Reference
https://git.kernel.org/stable/c/a5bbaddf69853117f28173c3f5c8fc14c6b2ec82
Added
Reference
https://git.kernel.org/stable/c/be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a
Added
Reference
https://git.kernel.org/stable/c/f579582c03ed526281a8450159baf1d35099a85f
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":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"23658b350b4107e8292045c2044983fd426fa15d","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"a5bbaddf69853117f28173c3f5c8fc14c6b2ec82","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"900cd6d8119b7f3ae5c4bf82f922ff5957df43db","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"f579582c03ed526281a8450159baf1d35099a85f","versionType":"git","status":"affected"},{"version":"f0703c80e5156406ad947cb67fe277725b48080f","lessThan":"be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a","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":"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-2026-68140 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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