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CVE-2026-53213

drm/vc4: fix krealloc() memory leak PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before 30165a09f76eaf34951c818eb5d9d6e4771d76f6; affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f; affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e; affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27; affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before 02f5e4db57c0cdd7bac89d503b301a093a0fa95c; affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before 4fc692dc6df5bc777cc1bcebf95179e28594875f; affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 before 5d563a5da8717629ae72f9eadf1e0e340bd1658b
Linux / Linuxaffected 4.8; unaffected 0 before 4.8; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through *

CWE

No CWE identifiers supplied.

References