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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/dviread.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/dviread.c')
| -rw-r--r-- | backend/dvi/mdvi-lib/dviread.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/backend/dvi/mdvi-lib/dviread.c b/backend/dvi/mdvi-lib/dviread.c index cd8cfa91..d0143205 100644 --- a/backend/dvi/mdvi-lib/dviread.c +++ b/backend/dvi/mdvi-lib/dviread.c @@ -1507,6 +1507,10 @@ int special(DviContext *dvi, int opcode) Int32 arg; arg = dugetn(dvi, opcode - DVI_XXX1 + 1); + if (arg <= 0) { + dvierr(dvi, _("malformed special length\n")); + return -1; + } s = mdvi_malloc(arg + 1); dread(dvi, s, arg); s[arg] = 0; |