CVE-2026-64219

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-64219

Key Details

CVE	CVE-2026-64219
CVSS Score / Version	7.0 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is high; 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-674 (Uncontrolled Recursion)

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:

drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async

[Why&How]

dc_process_dmub_aux_transfer_async() copies payload->length bytes into a

16-byte stack buffer (dpaux.data[16]) guarded only by an ASSERT(), which

is a no-op in release builds. If a caller ever passes length > 16 this

results in a stack buffer overflow via memcpy.

Additionally, link_index is used to dereference dc->links[] without

bounds checking against dc->link_count, risking an out-of-bounds access.

Replace the ASSERT with a hard runtime check that returns false when

payload->length exceeds the destination buffer size, and add a bounds

check for link_index before it is used.

(cherry picked from commit ba4caa9fecdf7a38f98c878ad05a8a64148b6881) (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-64219
CVE	https://www.cve.org/CVERecord?id=CVE-2026-64219

Source

Reference

NVD

CVE