diff options
| author | Willy Tarreau <w@1wt.eu> | 2008-08-05 00:20:03 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-08-06 09:03:27 -0700 |
| commit | ee3b94e26df9e2903add812f7f43cdcdc2ed5288 (patch) | |
| tree | f471243d3db392fdbab6fb79e83bc593b0d470b7 | |
| parent | 8256c73d4fab8b3b019b7a21974252854d6deb68 (diff) | |
| download | lwn-ee3b94e26df9e2903add812f7f43cdcdc2ed5288.tar.gz lwn-ee3b94e26df9e2903add812f7f43cdcdc2ed5288.zip | |
sound: ensure device number is valid in snd_seq_oss_synth_make_info
commit 82e68f7ffec3800425f2391c8c86277606860442 upstream
snd_seq_oss_synth_make_info() incorrectly reports information
to userspace without first checking for the validity of the
device number, leading to possible information leak (CVE-2008-3272).
Reported-By: Tobias Klein <tk@trapkit.de>
Acked-and-tested-by: Takashi Iwai <tiwai@suse.de>
Cc: stable@kernel.org
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | sound/core/seq/oss/seq_oss_synth.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c index 558dadbf45f1..e024e4588b82 100644 --- a/sound/core/seq/oss/seq_oss_synth.c +++ b/sound/core/seq/oss/seq_oss_synth.c @@ -604,6 +604,9 @@ snd_seq_oss_synth_make_info(struct seq_oss_devinfo *dp, int dev, struct synth_in { struct seq_oss_synth *rec; + if (dev < 0 || dev >= dp->max_synthdev) + return -ENXIO; + if (dp->synths[dev].is_midi) { struct midi_info minf; snd_seq_oss_midi_make_info(dp, dp->synths[dev].midi_mapped, &minf); |