patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk Commit: https://github.com/vim/vim/commit/0fb375aae608d7306b4baf9c1f906961f32e2abf Author: Christian Brabandt <cb@256bit.org> Date: Wed Nov 29 10:23:39 2023 +0100 patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk Problem: [security]: buffer-overflow in suggest_trie_walk Solution: Check n before using it as index into byts array Basically, n as an index into the byts array, can point to beyond the byts array. So let's double check, that n is within the expected range after incrementing it from sp->ts_curi and bail out if it would be invalid. Reported by @henices, thanks! Signed-off-by: Christian Brabandt <cb@256bit.org>

> +0&#ffffff0@74
|~+0#4040ff13&| @73
|~| @73
|~| @31|╔+0#0000001#ffd7ff255|═@5|╗| +0#4040ff13#ffffff0@33
|~| @31|║+0#0000001#ffd7ff255| |1@2| | +0#0000000#0000001|║+0#0000001#ffd7ff255| +0#4040ff13#ffffff0@33
|~| @31|║+0#0000001#ffd7ff255| |2@2| | +0#0000000#a8a8a8255|║+0#0000001#ffd7ff255| +0#4040ff13#ffffff0@33
|~| @31|╚+0#0000001#ffd7ff255|═@5|╝| +0#4040ff13#ffffff0@33
|~| @73
|~| @73
| +0#0000000&@56|0|,|0|-|1| @8|A|l@1|