CVE-2024-50233: staging: iio: frequency: ad9832: fix division by zero in ad9832_calc_freqreg()
First published: Sat Nov 09 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.39<5.4.285 | |
| Linux Kernel | >=5.5<5.10.229 | |
| Linux Kernel | >=5.11<5.15.171 | |
| Linux Kernel | >=5.16<6.1.116 | |
| Linux Kernel | >=6.2<6.6.60 | |
| Linux Kernel | >=6.7<6.11.7 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| Linux Kernel | =6.12-rc5 |
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Reference Links
- https://git.kernel.org/stable/c/fcd6b59f7a774558e2525251c68aa37aff748e55
- https://git.kernel.org/stable/c/442f786c5bff8cfd756ebdeaa4aadbf05c22aa5a
- https://git.kernel.org/stable/c/2f39548f45693d86e950647012a214da6917dc9f
- https://git.kernel.org/stable/c/ccbc10647aafe2b7506edb4b10e19c6c2416c162
- https://git.kernel.org/stable/c/adfbc08b94e7df08b9ed5fa26b969cc1b54c84ec
- https://git.kernel.org/stable/c/dd9e1cf619c945f320e686dcaf13e37ef0b05fdd
- https://git.kernel.org/stable/c/6bd301819f8f69331a55ae2336c8b111fc933f3d
Frequently Asked Questions
What is the severity of CVE-2024-50233?
CVE-2024-50233 has a medium severity rating due to the potential for a division by zero error in the Linux kernel.
How do I fix CVE-2024-50233?
To fix CVE-2024-50233, update your Linux kernel to a version that addresses the division by zero vulnerability.
Which versions of the Linux kernel are affected by CVE-2024-50233?
CVE-2024-50233 affects multiple versions of the Linux kernel ranging from 2.6.39 to 6.12-rc5.
What components are impacted by CVE-2024-50233?
CVE-2024-50233 impacts the iio: frequency: ad9832 component of the Linux kernel.
Is CVE-2024-50233 exploitable remotely?
CVE-2024-50233 is not considered remotely exploitable since the vulnerability requires local access to trigger the division by zero.
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