Mercurial > vim
view src/libvterm/find-wide-chars.pl @ 33863:3b8089d550eb v9.0.2141
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>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sun, 10 Dec 2023 15:16:03 +0100 |
parents | 55a373a243c0 |
children |
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line source
#!/usr/bin/perl use strict; use warnings; STDOUT->autoflush(1); sub iswide { my ( $cp ) = @_; return chr($cp) =~ m/\p{East_Asian_Width=Wide}|\p{East_Asian_Width=Fullwidth}/; } my ( $start, $end ); foreach my $cp ( 0 .. 0x1FFFF ) { iswide($cp) or next; if( defined $end and $end == $cp-1 ) { # extend the range $end = $cp; next; } # start a new range printf " { %#04x, %#04x },\n", $start, $end if defined $start; $start = $end = $cp; } printf " { %#04x, %#04x },\n", $start, $end if defined $start;