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| author | Junrui Luo <moonafterrain@outlook.com> | 2025-11-28 12:06:31 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 14:00:16 +0100 |
| commit | 932aa1e80b022419cf9710e970739b7a8794f27c (patch) | |
| tree | 9dfefba94bba23ce4d492b42fe150189d1f041fc /lib/bootconfig-data.S | |
| parent | dd2807a22a2330dbe2f0588e578ff5ec05185920 (diff) | |
ALSA: dice: fix buffer overflow in detect_stream_formats()
commit 324f3e03e8a85931ce0880654e3c3eb38b0f0bba upstream.
The function detect_stream_formats() reads the stream_count value directly
from a FireWire device without validating it. This can lead to
out-of-bounds writes when a malicious device provides a stream_count value
greater than MAX_STREAMS.
Fix by applying the same validation to both TX and RX stream counts in
detect_stream_formats().
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Reported-by: Junrui Luo <moonafterrain@outlook.com>
Fixes: 58579c056c1c ("ALSA: dice: use extended protocol to detect available stream formats")
Cc: stable@vger.kernel.org
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Link: https://patch.msgid.link/SYBPR01MB7881B043FC68B4C0DA40B73DAFDCA@SYBPR01MB7881.ausprd01.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/bootconfig-data.S')
0 files changed, 0 insertions, 0 deletions