CVE-2026-68140

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-68140

Key Details

CVE	CVE-2026-68140
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is adjacent; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68140
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68140

Source

Reference

NVD

CVE