CVE-2026-64018

Last refreshed2026-10-13

Status: UPDATED | Advisory ID: CVE-2026-64018

Key Details

CVE	CVE-2026-64018
CVSS Score / Version	9.3 (Critical) / CVSS v3.1
Updated	2026-10-13
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-129 (Improper Validation of Array Index)

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: mana: validate rx_req_idx to prevent out-of-bounds array access

In mana_hwc_rx_event_handler(), rx_req_idx is derived from

sge->address in DMA-coherent memory. In Confidential VMs

(SEV-SNP/TDX), this memory is shared unencrypted and HW can modify

WQE contents at any time. No bounds check exists on rx_req_idx,

which can lead to an out-of-bounds access into reqs[].

Add bounds check on rx_req_idx in mana_hwc_rx_event_handler() before

using it to index the reqs[] array. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-64018
CVE	https://www.cve.org/CVERecord?id=CVE-2026-64018

Source

Reference

NVD

CVE