Out-of-bounds read in Linux kernel - CVE-2026-46263
Published: June 4, 2026
Vulnerability identifier: #VU133326
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46263
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in the AMD display stream encoder creation functions when handling a crafted engine identifier. A local user can supply an invalid eng_id value to trigger an out-of-bounds array access and cause a denial of service.
The issue affects multiple DCN resource implementations, including dcn315, dcn316, dcn32, dcn321, dcn35, and dcn351.
How to mitigate CVE-2026-46263
Install security update from vendor's repository.