CVE-2026-72297

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-72297

Key Details

CVE	CVE-2026-72297
CVSS Score / Version	7.1 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; 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: atm: reject out-of-range traffic classes in QoS validation

Reject ATM traffic classes above ATM_ANYCLASS in check_tp().

SO_ATMQOS stores the supplied QoS after check_qos() succeeds, so

accepting larger values leaves invalid traffic_class values in

vcc->qos.

That bad state later reaches pvc_info(), which indexes class_name[]

with vcc->qos.{rx,tp}.traffic_class. Values above ATM_ANYCLASS cause

an out-of-bounds read when /proc/net/atm/pvc is read.

Tighten the existing QoS validation so invalid traffic_class values

are rejected at the point where user supplied QoS is accepted. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-72297
CVE	https://www.cve.org/CVERecord?id=CVE-2026-72297

Source

Reference

NVD

CVE