CVE-2026-64495iio: gyro: bmg160: bail out when bandwidth/filter is not in table

Official description

In the Linux kernel, the following vulnerability has been resolved: iio: gyro: bmg160: bail out when bandwidth/filter is not in table bmg160_get_filter() walks bmg160_samp_freq_table[] looking for the entry matching the bw_bits value read from the chip: for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { if (bmg160_samp_freq_table[i].bw_bits == bw_bits) break; } *val = bmg160_samp_freq_table[i].filter; If no entry matches, i ends up equal to the array size and the next line reads one slot past the end. bmg160_set_filter() has the same shape, driven by 'val' instead of bw_bits. smatch flags both: drivers/iio/gyro/bmg160_core.c:204 bmg160_get_filter() error: buffer overflow 'bmg160_samp_freq_table' 7 <= 7 drivers/iio/gyro/bmg160_core.c:222 bmg160_set_filter() error: buffer overflow 'bmg160_samp_freq_table' 7 <= 7 Return -EINVAL when no entry matches. The set_filter() path is reachable from userspace via the sysfs in_anglvel_filter_low_pass_3db_frequency interface, so userspace can trivially trigger the out-of-bounds read with a value that is not in bmg160_samp_freq_table[].filter.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/1dc3a833be11e5d503038e3c701745fd0e03903c
• https://git.kernel.org/stable/c/77e56ebb1786f4296afd5fa46975a989b285ae65
• https://git.kernel.org/stable/c/029481cddb98697716f4bf3021d035eaf2ca0e1f
• https://git.kernel.org/stable/c/8d202515baea4e2e3be448d1590099af28f2346d
• https://git.kernel.org/stable/c/d85ee50f58dd83fe74f6d0bf8bd345c657b216e8
• https://git.kernel.org/stable/c/7bbf02b63961fc1768c9c654392c11f2077d4c59
• https://git.kernel.org/stable/c/6c8675468862161d1c59130266852b66867d3861
• https://git.kernel.org/stable/c/8320c77e67382d5d55d77043a5f60a867d408a2b