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| author | Mike DePaulo <mikedep333@gmail.com> | 2015-02-08 19:15:20 -0500 |
|---|---|---|
| committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-02-14 16:14:31 +0100 |
| commit | af55da1e9c1a6a352b24823a8f7062c288ffbbc0 (patch) | |
| tree | c40bf03134cb49ce7b8aac584346e9c08c965ffb | |
| parent | 902dc519d96be582088e5fe0644cefac7ecc0133 (diff) | |
| download | nx-libs-af55da1e9c1a6a352b24823a8f7062c288ffbbc0.tar.gz nx-libs-af55da1e9c1a6a352b24823a8f7062c288ffbbc0.tar.bz2 nx-libs-af55da1e9c1a6a352b24823a8f7062c288ffbbc0.zip | |
LZW decompress: fix for CVE-2011-2895 From xorg/lib/Xfont commit d11ee5886e9d9ec610051a206b135a4cdc1e09a0
Specially crafted LZW stream can crash an application using libXfont
that is used to open untrusted font files. With X server, this may
allow privilege escalation when exploited
| -rw-r--r-- | nx-X11/lib/font/fontfile/decompress.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/nx-X11/lib/font/fontfile/decompress.c b/nx-X11/lib/font/fontfile/decompress.c index a4c546871..553b31585 100644 --- a/nx-X11/lib/font/fontfile/decompress.c +++ b/nx-X11/lib/font/fontfile/decompress.c @@ -261,6 +261,8 @@ BufCompressedFill (BufFilePtr f) */ while ( code >= 256 ) { + if (stackp - de_stack >= STACK_SIZE - 1) + return BUFFILEEOF; *stackp++ = file->tab_suffix[code]; code = file->tab_prefix[code]; } |