CVE-2024-50233: staging: iio: frequency: ad9832: fix division by zero in ad9832_calc_freqreg()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-09 · updated 2026-06-17
Weakness: CWE-369

Description

In the Linux kernel, the following vulnerability has been resolved: staging: iio: frequency: ad9832: fix division by zero in ad9832_calc_freqreg() In the ad9832_write_frequency() function, clk_get_rate() might return 0. This can lead to a division by zero when calling ad9832_calc_freqreg(). The check if (fout > (clk_get_rate(st->mclk) / 2)) does not protect against the case when fout is 0. The ad9832_write_frequency() function is called from ad9832_write(), and fout is derived from a text buffer, which can contain any value.

Affected products

Linux kernel: from 2.6.39 before 5.4.285; from 5.5 before 5.10.229; from 5.11 before 5.15.171; from 5.16 before 6.1.116; from 6.2 before 6.6.60; from 6.7 before 6.11.7 — fixed in 5.10.229, 5.15.171, 5.4.285, 6.1.116, 6.11.7, 6.6.60

How to fix

Upgrade to a fixed version: Linux kernel 5.10.229, 5.15.171, 5.4.285, 6.1.116. Check the vendor advisory for mitigations.

References

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