CVE-2026-31464

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-31464

Key Details

CVE	CVE-2026-31464
CVSS Score / Version	8.1 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`
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 none; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-125 (Out-of-bounds Read)

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:

scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done()

A malicious or compromised VIO server can return a num_written value in the

discover targets MAD response that exceeds max_targets. This value is

stored directly in vhost->num_targets without validation, and is then used

as the loop bound in ibmvfc_alloc_targets() to index into disc_buf[], which

is only allocated for max_targets entries. Indices at or beyond max_targets

access kernel memory outside the DMA-coherent allocation. The

out-of-bounds data is subsequently embedded in Implicit Logout and PLOGI

MADs that are sent back to the VIO server, leaking kernel memory.

Fix by clamping num_written to max_targets before storing it. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-31464
CVE	https://www.cve.org/CVERecord?id=CVE-2026-31464

Source

Reference

NVD

CVE