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>

|t+0&#ffffff0|e|x|t| |a+0#4040ff13&|f|t|e|r| |x+0#0000000&@1|o|n|e| |t|e|x|t| |y@1|b+0#4040ff13&|e|f|o|r|e| |t+0#0000000&|w|o| @25
@60
|f|u|n|c|t|i|o|n|(| @50
@4|a+0&#ffd7ff255|r|g|:| >a+0&#ffffff0|r|g|)| @46
|~+0#4040ff13&| @58
|~| @58
|~| @58
| +0#0000000&@41|4|,|5|-|1|0| @7|A|l@1|