CVE-2026-31650

Last refreshed2026-10-23

Status: UPDATED | Advisory ID: CVE-2026-31650

Key Details

CVE	CVE-2026-31650
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-21
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-416 (Use After Free)

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:

mmc: vub300: fix use-after-free on disconnect

The vub300 driver maintains an explicit reference count for the

controller and its driver data and the last reference can in theory be

dropped after the driver has been unbound.

This specifically means that the controller allocation must not be

device managed as that can lead to use-after-free.

Note that the lifetime is currently also incorrectly tied the parent USB

device rather than interface, which can lead to memory leaks if the

driver is unbound without its device being physically disconnected (e.g.

on probe deferral).

Fix both issues by reverting to non-managed allocation of the controller. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-31650
CVE	https://www.cve.org/CVERecord?id=CVE-2026-31650

Source

Reference

NVD

CVE