Linux Linux Kernel Vulnerability Rated 7.1 CVSS

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-53146

Key Details

CVE	CVE-2026-53146
CVSS Score / Version	7.1 (High) / CVSS v3.1
Updated	2026-10-15
CVSS Vector	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N`
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 low; availability impact is none.
Affected products	Linux Kernel and Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Exploitation prediction (EPSS)	0.26% probability of exploitation in the next 30 days (16% percentile) -- FIRST.org's EPSS model.

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Siemens

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Subsystems	Controllers & Field I/O, OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Limit XDomain response copy to actual frame size

tb_xdomain_copy() copies req->response_size bytes from the received

packet buffer regardless of the actual frame size. When a short

response arrives, this reads past the valid frame data in the DMA

pool buffer into stale contents from previous transactions.

Use the minimum of frame size and expected response size for the

copy length. (NVD)

Monitor Linux's and Siemens's web pages for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-53146
CVE	https://www.cve.org/CVERecord?id=CVE-2026-53146

Source

Reference

NVD

CVE