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CVE-2026-98660: iio: pressure: bmp280: fix out-of-bounds access in sampling frequency lookup

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: iio: pressure: bmp280: fix out-of-bounds access in sampling frequency lookup The sampling frequency tables store each frequency as an integer part and a fractional part in micro units. num_sampling_freq_avail is initialized to the number of flattened integer elements because read_avail() returns the table as a flat array. bmp280_write_sampling_frequency(), however, indexes the same table as a two-dimensional array and uses num_sampling_freq_avail as the number of rows. Convert the flattened element count back to the number of rows before iterating over the table.

Affected products

• Linux: 6.1 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/05ef1af381a0f4556c7e3c0dc6bc2428d16c707e
• https://git.kernel.org/stable/c/4fd5a61e61d6899cbd45728a5fceba49a53c222d
• https://git.kernel.org/stable/c/56c423b233b214182c58c99861899327b45b0d6c
• https://git.kernel.org/stable/c/7dbb518f3328ebd9d5c6e970b4befad6deb5c7f1
• https://git.kernel.org/stable/c/9db6684fab228edd3b8861a172ccbce3236f027a
• https://git.kernel.org/stable/c/fed876157271fc4bc28b8739ad73642553a5920e

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