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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/tfmfile.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/tfmfile.c')
| -rw-r--r-- | backend/dvi/mdvi-lib/tfmfile.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/backend/dvi/mdvi-lib/tfmfile.c b/backend/dvi/mdvi-lib/tfmfile.c index 73ebf26a..8c2a30b2 100644 --- a/backend/dvi/mdvi-lib/tfmfile.c +++ b/backend/dvi/mdvi-lib/tfmfile.c @@ -172,7 +172,8 @@ int tfm_load_file(const char *filename, TFMInfo *info) /* We read the entire TFM file into core */ if(fstat(fileno(in), &st) < 0) return -1; - if(st.st_size == 0) + /* according to the spec, TFM files are smaller than 16K */ + if(st.st_size == 0 || st.st_size >= 16384) goto bad_tfm; /* allocate a word-aligned buffer to hold the file */ |