873e2360d2
commit 61006c540cbdedea83b05577dc7fb7fa18fe1276 upstream. In the audio mixer handling code of ctxfi driver, the conf field is used as a kind of loop index, and it's referred in the index callbacks (amixer_index() and sum_index()). As spotted recently by fuzzers, the current code causes OOB access at those functions. | UBSAN: array-index-out-of-bounds in /build/reproducible-path/linux-6.17.8/sound/pci/ctxfi/ctamixer.c:347:48 | index 8 is out of range for type 'unsigned char [8]' After the analysis, the cause was found to be the lack of the proper (re-)initialization of conj field. This patch addresses those OOB accesses by adding the proper initializations of the loop indices. Reported-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Karsten Hohmeier <linux@hohmatik.de> Closes: https://bugs.debian.org/1121535 Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/all/aSk8KJI35H7gFru6@eldamar.lan/ Link: https://patch.msgid.link/20260119133212.189129-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| Makefile | ||
| ct20k1reg.h | ||
| ct20k2reg.h | ||
| ctamixer.c | ||
| ctamixer.h | ||
| ctatc.c | ||
| ctatc.h | ||
| ctdaio.c | ||
| ctdaio.h | ||
| cthardware.c | ||
| cthardware.h | ||
| cthw20k1.c | ||
| cthw20k1.h | ||
| cthw20k2.c | ||
| cthw20k2.h | ||
| ctimap.c | ||
| ctimap.h | ||
| ctmixer.c | ||
| ctmixer.h | ||
| ctpcm.c | ||
| ctpcm.h | ||
| ctresource.c | ||
| ctresource.h | ||
| ctsrc.c | ||
| ctsrc.h | ||
| cttimer.c | ||
| cttimer.h | ||
| ctvmem.c | ||
| ctvmem.h | ||
| xfi.c | ||