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| author | infirit <[email protected]> | 2014-12-10 00:58:36 +0100 |
|---|---|---|
| committer | infirit <[email protected]> | 2014-12-10 00:58:36 +0100 |
| commit | a828cb1a5c0835d08a17c86f64d571436f93f980 (patch) | |
| tree | 6ad1a50b5854ffe240a46f2572b170c599efbfd1 /backend/dvi/mdvi-lib/vf.c | |
| parent | b2d02d6471176fdb0e42dbe05ffaee90a933a239 (diff) | |
| download | atril-a828cb1a5c0835d08a17c86f64d571436f93f980.tar.bz2 atril-a828cb1a5c0835d08a17c86f64d571436f93f980.tar.xz | |
backends: Fix several security issues in the dvi-backend.
See CVE-2010-2640, CVE-2010-2641, CVE-2010-2642 and CVE-2010-2643.
Taken from evince commit: d4139205b010ed06310d14284e63114e88ec6de2
From: José Aliste <[email protected]>
Diffstat (limited to 'backend/dvi/mdvi-lib/vf.c')
| -rw-r--r-- | backend/dvi/mdvi-lib/vf.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/backend/dvi/mdvi-lib/vf.c b/backend/dvi/mdvi-lib/vf.c index fb498476..a5ae3bbe 100644 --- a/backend/dvi/mdvi-lib/vf.c +++ b/backend/dvi/mdvi-lib/vf.c @@ -165,6 +165,12 @@ static int vf_load_font(DviParams *params, DviFont *font) cc = fuget1(p); tfm = fuget3(p); } + if (cc < 0 || cc > 65536) { + /* TeX engines do not support char codes bigger than 65535 */ + mdvi_error(_("(vf) %s: unexpected character %d\n"), + font->fontname, cc); + goto error; + } if(loc < 0 || cc < loc) loc = cc; if(hic < 0 || cc > hic) |