Out-of-bounds read in Linux kernel - CVE-2026-46218
Published: May 29, 2026
Vulnerability identifier: #VU132974
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-2026-46218
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 ib_get_value and ib_set_value when processing indirect buffer data at predefined offsets. A local user can supply a specially crafted indirect buffer to cause a denial of service.
The issue affects the uvd, vce, and vcn code paths.
How to mitigate CVE-2026-46218
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0fb5cb556b249b2b64c0f818136c4c3e838ef53f
- https://git.kernel.org/stable/c/66085e206431ef88ce36f53c1f53d570790ccc9e
- https://git.kernel.org/stable/c/a853178d23e774adfe3a35073c375b04b3b20f7d
- https://git.kernel.org/stable/c/ee26fcf7c5cf131f0b6a732faa27d79ec61b8ec7
- https://git.kernel.org/stable/c/fec8b11b55e53ff51a741e56894fe331a516f5c6