diff options
| author | raghavendra ambadas <rambad@codeaurora.org> | 2018-10-09 15:50:40 +0530 |
|---|---|---|
| committer | raghavendra ambadas <rambad@codeaurora.org> | 2018-11-07 10:43:01 +0530 |
| commit | 2a93d1bcfabaaa5eace208ad6e066343101f3ed2 (patch) | |
| tree | 7fb5a0bef25f2f261ecba0b746951e7ddcabb5b6 | |
| parent | eca90feb2c938bf47de66847b67fd9408dc90611 (diff) | |
app: aboot: Add check for buffer overflow
Add check to detect header block size buffer overflow.
Change-Id: I2664592adb50adb596b5e48401324aa7ecc35488
Signed-off-by: Raghavendra Ambadas <rambad@codeaurora.org>
| -rw-r--r-- | app/aboot/aboot.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/app/aboot/aboot.c b/app/aboot/aboot.c index b4ccff6..5167964 100644 --- a/app/aboot/aboot.c +++ b/app/aboot/aboot.c @@ -4507,7 +4507,11 @@ int splash_screen_flash() fb_display = fbcon_display(); if (fb_display) { - if (header->type && (header->blocks != 0)) { // RLE24 compressed data + if (header->type && (header->blocks != 0) && + (UINT_MAX >= header->blocks * 512) && + ((header->blocks * 512) <= (fb_display->width * + fb_display->height * (fb_display->bpp / 8)))) { + /* RLE24 compressed data */ uint8_t *base = (uint8_t *) fb_display->base + LOGO_IMG_OFFSET; /* if the logo is full-screen size, remove "fbcon_clear()" */ @@ -4604,7 +4608,11 @@ int splash_screen_mmc() } if (fb_display) { - if (header->type && (header->blocks != 0)) { /* 1 RLE24 compressed data */ + if (header->type && (header->blocks != 0) && + (UINT_MAX >= header->blocks * 512 + LOGO_IMG_HEADER_SIZE) && + ((header->blocks * 512) <= (fb_display->width * + fb_display->height * (fb_display->bpp / 8)))) { + /* 1 RLE24 compressed data */ base += LOGO_IMG_OFFSET; realsize = header->blocks * 512; |