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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-09 16:01:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-22 13:32:16 +0200 |
| commit | d04dd67ab10dc978c6c843c6bd6a2a66a9444f51 (patch) | |
| tree | a027c8b2e748c6cbf3cf0cd56f22be6ad1c89410 /tools/perf/scripts/python | |
| parent | 87bc3557c708110d83086bf091328271298a44e3 (diff) | |
| download | kernel-d04dd67ab10dc978c6c843c6bd6a2a66a9444f51.tar.gz | |
ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0
commit 48bd344e1040b9f2eb512be73c13f5db83efc191 upstream.
A malicious USB device with the TASCAM US-144MKII device id can have a
configuration containing bInterfaceNumber=1 but no interface 0. USB
configuration descriptors are not required to assign interface numbers
sequentially, so usb_ifnum_to_if(dev, 0) returns will NULL, which will
then be dereferenced directly.
Fix this up by checking the return value properly.
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Fixes: dee1bcf28a3d ("ALSA: usb-audio: Add initial driver for TASCAM US-144MKII")
Cc: stable <stable@kernel.org>
Assisted-by: gregkh_clanker_t1000
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/2026040955-fall-gaining-e338@gregkh
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions