Mercurial > vim
view src/testdir/test_largefile.vim @ 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 | 08940efa6b4e |
children |
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" Tests for large files " This is only executed manually: "make test_largefile". " This is not run as part of "make test". func Test_largefile() let fname = 'Xlarge.txt' call delete(fname) exe "e" fname " Make sure that a line break is 1 byte (LF). set ff=unix set undolevels=-1 " Input 99 'A's. The line becomes 100 bytes including a line break. exe "normal 99iA\<Esc>" yank " Put 39,999,999 times. The file becomes 4,000,000,000 bytes. normal 39999999p " Moving around in the file randomly. normal G normal 10% normal 90% normal 50% normal gg w " Check if the file size is 4,000,000,000 bytes. let fsize=getfsize(fname) call assert_true(fsize == 4000000000) call delete(fname) endfunc " vim: shiftwidth=2 sts=2 expandtab