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efi/libstub: Free correct pointer on failure

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cmdline_ptr is an out parameter, which is not allocated by the function
itself, and likely points into the caller's stack.

cmdline refers to the pool allocation that should be freed when cleaning
up after a failure, so pass this instead to free_pool().

Fixes: 42c8ea3dca ("efi: libstub: Factor out EFI stub entrypoint ...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel 2024-10-13 15:19:04 +02:00
parent 63971b0f51
commit 06d39d79cb
1 changed files with 1 additions and 1 deletions
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drivers/firmware/efi/libstub/efi-stub.c
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@ -148,7 +148,7 @@ efi_status_t efi_handle_cmdline(efi_loaded_image_t *image, char **cmdline_ptr)
return EFI_SUCCESS;
fail_free_cmdline:
efi_bs_call(free_pool, cmdline_ptr);
efi_bs_call(free_pool, cmdline);
return status;
}