CVE-2026-53329 is a vulnerability in Linux Kernel
Published on July 1, 2026
drm/amd/display: Use krealloc_array() in dal_vector_reserve()
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 37668568641ccc4cc1dbca4923d0a16609dd5707)
Products Associated with CVE-2026-53329
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Affected Versions
Linux:- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below 31180638a33acad12c863132704a76536fb66211 is affected.
- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below b15825deac1acff72638bbc8f05b89ceef8dfb13 is affected.
- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below 201151e120f0062bcda21cad5d007b82725ad23b is affected.
- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below a914aa802669e073f014dae2e5708633b5cecd34 is affected.
- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below e09689286385a66311ac6922af95339d7a3cef8d is affected.
- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below de988c7a31f0774f07894cfe4802996f318e2870 is affected.
- Version 2004f45ef83f07f43f5da6ede780b08068c7583d and below da48bc4461b8a5ebfb9264c9b191a701d8e99009 is affected.
- Version 4.15 is affected.
- Before 4.15 is unaffected.
- Version 5.15.210, <= 5.15.* is unaffected.
- Version 6.1.176, <= 6.1.* is unaffected.
- Version 6.6.143, <= 6.6.* is unaffected.
- Version 6.12.94, <= 6.12.* is unaffected.
- Version 6.18.36, <= 6.18.* is unaffected.
- Version 7.0.13, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.