CVE-2026-53329

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 376685...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 2004f45ef83f07f43f5da6ede780b08068c7583d < 9540b0a4d13e4ede64ae1197d66a176d2149daa9, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < 31180638a33acad12c863132704a76536fb66211, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < b15825deac1acff72638bbc8f05b89ceef8dfb13, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < 201151e120f0062bcda21cad5d007b82725ad23b, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < a914aa802669e073f014dae2e5708633b5cecd34, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < e09689286385a66311ac6922af95339d7a3cef8d, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < de988c7a31f0774f07894cfe4802996f318e2870, >= 2004f45ef83f07f43f5da6ede780b08068c7583d < da48bc4461b8a5ebfb9264c9b191a701d8e99009, >= 4.15, >= 4.15 < 5.10.260, >= 5.11 < 5.15.210, >= 5.16 < 6.1.176, >= 6.2 < 6.6.143, >= 6.7 < 6.12.94, >= 6.13 < 6.18.36, >= 6.19 < 7.0.13, 7.1

Fixed versions

5.10.260, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-674