CVE-2026-53213
Description
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().
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 6d45c81d229d71da54d374143e7d6abad4c0cf31 < 30165a09f76eaf34951c818eb5d9d6e4771d76f6, 6d45c81d229d71da54d374143e7d6abad4c0cf31 < fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f, 6d45c81d229d71da54d374143e7d6abad4c0cf31 < e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e, 6d45c81d229d71da54d374143e7d6abad4c0cf31 < c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27 … |
| Linux | Linux | — | 4.8, 0 < 4.8, 5.15.210 ≤ 5.15.*, 6.1.176 ≤ 6.1.* … |
References (7)
- https://git.kernel.org/stable/c/30165a09f76eaf34951c818eb5d9d6e4771d76f6
- https://git.kernel.org/stable/c/fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f
- https://git.kernel.org/stable/c/e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e
- https://git.kernel.org/stable/c/c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27
- https://git.kernel.org/stable/c/02f5e4db57c0cdd7bac89d503b301a093a0fa95c
- https://git.kernel.org/stable/c/4fc692dc6df5bc777cc1bcebf95179e28594875f
- https://git.kernel.org/stable/c/5d563a5da8717629ae72f9eadf1e0e340bd1658b