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medium5.5

CVE-2026-53213

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: fix krealloc() memory leak Don't just overwrite the original pointer passed to kre…

Impact

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: fix krealloc() memory leak Don't just overwrite the original pointer passed to krealloc() with its return value without checking latter: MEM = krealloc(MEM, SZ, GFP); If krealloc() returns NULL, that erases the pointer to the still allocated memory, hence leaks this memory. Instead, use a temporary variable, check it's not NULL and only then assign it to the original pointer: TMP = krealloc(MEM, SZ, GFP); if (!TMP) return; MEM = TMP; While on it, use krealloc_array().

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.8 before 5.15.210
from 5.16 before 6.1.176
from 6.2 before 6.6.143
from 6.7 before 6.12.94
from 6.13 before 6.18.36
from 6.19 before 7.0.13

Weakness classification

CWE-401

References