From c0207583e02205cf4dfda08fd102ebdb3df0b4f2 Mon Sep 17 00:00:00 2001 From: Ashish Singhal Date: Wed, 29 Nov 2023 20:44:13 -0700 Subject: EmbeddedPkg: Fix Android Boot Command Line Length Bug Curently, AndroidBootImgLib expects input kernel command line to never exceed 256 unicode characters where the image header allows for 512 ascii characters. If image header allows 512 ascii characters, similar number of unicode characters should be allowed at the minimum. Signed-off-by: Ashish Singhal Reviewed-by: Abner Chang --- .../Library/AndroidBootImgLib/AndroidBootImgLib.c | 31 +++++++++++++--------- 1 file changed, 18 insertions(+), 13 deletions(-) (limited to 'EmbeddedPkg') diff --git a/EmbeddedPkg/Library/AndroidBootImgLib/AndroidBootImgLib.c b/EmbeddedPkg/Library/AndroidBootImgLib/AndroidBootImgLib.c index 1359a66..f63648e 100644 --- a/EmbeddedPkg/Library/AndroidBootImgLib/AndroidBootImgLib.c +++ b/EmbeddedPkg/Library/AndroidBootImgLib/AndroidBootImgLib.c @@ -322,11 +322,12 @@ AndroidBootImgGetFdt ( EFI_STATUS AndroidBootImgUpdateArgs ( IN VOID *BootImg, - OUT VOID *KernelArgs + OUT VOID **KernelArgs ) { CHAR8 ImageKernelArgs[ANDROID_BOOTIMG_KERNEL_ARGS_SIZE]; EFI_STATUS Status; + UINT32 NewKernelArgSize; // Get kernel arguments from Android boot image Status = AndroidBootImgGetKernelArgs (BootImg, ImageKernelArgs); @@ -334,16 +335,23 @@ AndroidBootImgUpdateArgs ( return Status; } + NewKernelArgSize = ANDROID_BOOTIMG_KERNEL_ARGS_SIZE; + *KernelArgs = AllocateZeroPool (sizeof (CHAR16) * NewKernelArgSize); + if (*KernelArgs == NULL) { + DEBUG ((DEBUG_ERROR, "Fail to allocate memory\n")); + return EFI_OUT_OF_RESOURCES; + } + AsciiStrToUnicodeStrS ( ImageKernelArgs, - KernelArgs, - ANDROID_BOOTIMG_KERNEL_ARGS_SIZE >> 1 + *KernelArgs, + NewKernelArgSize ); // Append platform kernel arguments if (mAndroidBootImg->AppendArgs) { Status = mAndroidBootImg->AppendArgs ( - KernelArgs, - ANDROID_BOOTIMG_KERNEL_ARGS_SIZE + *KernelArgs, + NewKernelArgSize ); } @@ -616,6 +624,10 @@ AndroidBootImgBoot ( UINTN RamdiskSize; IN VOID *FdtBase; + if ((Buffer == NULL) || (BufferSize == 0)) { + return EFI_INVALID_PARAMETER; + } + NewKernelArg = NULL; ImageHandle = NULL; @@ -637,14 +649,7 @@ AndroidBootImgBoot ( goto Exit; } - NewKernelArg = AllocateZeroPool (ANDROID_BOOTIMG_KERNEL_ARGS_SIZE); - if (NewKernelArg == NULL) { - DEBUG ((DEBUG_ERROR, "Fail to allocate memory\n")); - Status = EFI_OUT_OF_RESOURCES; - goto Exit; - } - - Status = AndroidBootImgUpdateArgs (Buffer, NewKernelArg); + Status = AndroidBootImgUpdateArgs (Buffer, &NewKernelArg); if (EFI_ERROR (Status)) { goto Exit; } -- cgit v1.1