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efi_loader: efi_realloc() must check efi_alloc() return value

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Avoid copying to NULL if out of memory.

Fixes: 3c08df58cc43 ("lib: efi_loader: efi_memory.c: add efi_realloc() for realloc memory")
Addresses-Coverity-ID: 569499: Null pointer dereferences (NULL_RETURNS)
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2025-07-08 12:08:20 +02:00
parent b9bb2627bb
commit aa703a816a
1 changed files with 2 additions and 0 deletions
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lib/efi_loader/efi_memory.c
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@ -714,6 +714,8 @@ efi_status_t efi_realloc(void **ptr, size_t size)
sizeof(struct efi_pool_allocation);
new_ptr = efi_alloc(size);
if (!new_ptr)
return EFI_OUT_OF_RESOURCES;
/* copy old data to new alloced buffer */
memcpy(new_ptr, *ptr, min(size, old_size));