[24.x] [gui] Bugfix: Check for readlink buffer overflow and handle gracefully #26434

1. 
   maflcko commented at 12:19 pm on November 1, 2022: member

   Identical commit taken as-is from #25548 for backport
2. Bugfix: Check for readlink buffer overflow and handle gracefully

   If readlink returns the size of the buffer, an overflow may have (safely) occurred.
   Pass a buffer size of MAX_PATH+1 (the size of the actual buffer) to detect this scenario.

   e049fd76f0
3. fanquake added this to the milestone 24.0 on Nov 1, 2022
4. fanquake added the label Backport on Nov 1, 2022
5. fanquake requested review from hebasto on Nov 1, 2022
6. hebasto approved
7. 
   hebasto commented at 1:00 pm on November 1, 2022: member

   ACK e049fd76f0d57c1e6400fbfbaf4cc6ebe540f16f
8. fanquake merged this on Nov 1, 2022
9. fanquake closed this on Nov 1, 2022

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10. bitcoin locked this on Nov 1, 2023

Contributors
maflcko hebasto

Labels
Backport

Milestone
24.0