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fbdev: sm501fb: Fix buffer errors in OF binding code

In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mode and free everything before freeing 'info.

Affected products

Linux
  • <48cf0f4c6581ec90104cec9c5bf794a8bf347e30
  • =<5.10.*
  • <9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31
  • <2.6.39
  • <de590cdf7efec8a0b6da90ae2ab5fc5df26810b9
  • <d8421e09382cfe0bd2a044c8b0a822f64855dd4e
  • =<6.6.*
  • =<*
  • <b2ff450f7f5cfc7143cab57c3ad70293ba8b822a
  • =<6.18.*
  • =<6.12.*
  • <d374f76e1257ecc5d691a765c512ed2c29a44741
  • =<7.1.*
  • =<5.15.*
  • <47008d59c60ed896085da95f8d4dd40e1677dd3a
  • <0bc3d909a49e1fd8b8c3f2160d526e672c40621d
  • =<6.1.*
  • ==2.6.39