CVE-2026-31468

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-31468

Key Details

CVE	CVE-2026-31468
CVSS Score / Version	7.8 (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: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-415 (Double 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:

vfio/pci: Fix double free in dma-buf feature

The error path through vfio_pci_core_feature_dma_buf() ignores its

own advice to only use dma_buf_put() after dma_buf_export(), instead

falling through the entire unwind chain. In the unlikely event that

we encounter file descriptor exhaustion, this can result in an

unbalanced refcount on the vfio device and double free of allocated

objects.

Avoid this by moving the "put" directly into the error path and return

the errno rather than entering the unwind chain. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-31468
CVE	https://www.cve.org/CVERecord?id=CVE-2026-31468

Source

Reference

NVD

CVE