CVE-2024-56567 ad7780: fix division by zero in ad7780_write_raw()

What is CVE-2024-56567?

CVE-2024-56567 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

ad7780: fix division by zero in ad7780_write_raw()

In the ad7780_write_raw() , val2 can be zero, which might lead to a division by zero error in DIV_ROUND_CLOSEST(). The ad7780_write_raw() is based on iio_info's write_raw. While val is explicitly declared that can be zero (in read mode), val2 is not specified to be non-zero.

Weakness: CWE-369

Which versions are affected by CVE-2024-56567?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56567?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-56567 being exploited?

There is no known exploitation of CVE-2024-56567 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-55512, AZL-55570, BELL-CVE-2024-56567, DEBIAN-CVE-2024-56567, GHSA-v2pf-j76r-xqh4, UBUNTU-CVE-2024-56567.