CVE-2026-74608

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-74608

Key Details

CVE	CVE-2026-74608
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-14
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; 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:

smb: client: Fix use-after-free in cifs_try_adding_channels()

cifs_try_adding_channels() takes a temporary reference to an interface

before dropping iface_lock. If cifs_ses_add_channel() fails, it drops

that reference and then increments iface->weight_fulfilled.

A concurrent interface list refresh can remove the list reference while

channel creation is in progress. In that case, the failure-path

kref_put() releases the last reference and frees iface. Updating

weight_fulfilled afterward then accesses freed memory.

Increment weight_fulfilled before dropping the temporary reference,

keeping iface alive for the final access. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74608
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74608

Source

Reference

NVD

CVE