[PATCH] linux_compat: fix NULL pointer dereference in get_mem()

[Tom Rini]

On Fri, Feb 27, 2026 at 12:27:28AM +0300, Anton Moryakov wrote:

> Add NULL check after memalign() call in get_mem() to prevent
> potential NULL pointer dereference (CWE-476).
> 
> The function memalign() can return NULL on allocation failure.
> Dereferencing the returned pointer without checking for NULL
> may cause a crash in low-memory conditions.
> 
> Changes:
> - Add NULL check after memalign() allocation
> - Return NULL on failure, consistent with function semantics
> 
> This fixes the static analyzer warning:
>   linux_compat.c:34: dereference of memalign return value without NULL check
> 
> Reported-by: static analyzer Svace
> Signed-off-by: Anton Moryakov <ant.v.moryakov at gmail.com>

Reviewed-by: Tom Rini <trini at konsulko.com>

-- 
Tom
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