CVE-2026-53329

Summary

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)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < 9540b0a4d13e4ede64ae1197d66a176d2149daa9affected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < 31180638a33acad12c863132704a76536fb66211affected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < b15825deac1acff72638bbc8f05b89ceef8dfb13affected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < 201151e120f0062bcda21cad5d007b82725ad23baffected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < a914aa802669e073f014dae2e5708633b5cecd34affected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < e09689286385a66311ac6922af95339d7a3cef8daffected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < de988c7a31f0774f07894cfe4802996f318e2870affected
LinuxLinux2004f45ef83f07f43f5da6ede780b08068c7583d < da48bc4461b8a5ebfb9264c9b191a701d8e99009affected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux5.10.260 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.94 <= 6.12.*unaffected
LinuxLinux6.18.36 <= 6.18.*unaffected
LinuxLinux7.0.13 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References