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| author | Tatsuya Kinoshita <tats@debian.org> | 2016-12-24 03:58:44 +0000 |
|---|---|---|
| committer | Tatsuya Kinoshita <tats@debian.org> | 2017-01-06 14:20:32 +0000 |
| commit | 4573b9d936175294c0ea93106bbfe5888f974792 (patch) | |
| tree | 395c11000b282e9258dfc21a3215fdc16a17c60f | |
| parent | Prevent heap-use-after-free read in HTMLlineproc0() (diff) | |
| download | w3m-4573b9d936175294c0ea93106bbfe5888f974792.tar.gz w3m-4573b9d936175294c0ea93106bbfe5888f974792.zip | |
Prevent invalid form_update_line() call in formUpdateBuffer()
Bug-Debian: https://github.com/tats/w3m/issues/82
Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=dc32152dc051923e322fc251aaa2dbd5e54c0fbf
| -rw-r--r-- | form.c | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -490,7 +490,8 @@ formUpdateBuffer(Anchor *a, Buffer *buf, FormItemList *form) spos = a->start.pos; epos = a->end.pos; } - if (a->start.line != a->end.line || spos > epos || epos >= l->len || spos < 0 || epos < 0) + if (a->start.line != a->end.line || spos > epos || epos >= l->len || + spos < 0 || epos < 0 || COLPOS(l, epos) < col) break; pos = form_update_line(l, &p, spos, epos, COLPOS(l, epos) - col, rows > 1, |