CVE-2024-26778

MEDIUM
Published Apr 3, 2024 Modified Feb 27, 2025 CWE-369

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. Although pixclock is checked in savagefb_decode_var(), but it is not checked properly in savagefb_probe(). Fix this by checking whether pixclock is zero in the function savagefb_check_var() before info->var.pixclock is used as the divisor. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-369 CWE-369

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 https://git.kernel.org/stable/c/070398d32c5f3ab0e890374904ad94551c76aec4 https://git.kernel.org/stable/c/224453de8505aede1890f007be973925a3edf6a1 https://git.kernel.org/stable/c/512ee6d6041e007ef5bf200c6e388e172a2c5b24 https://git.kernel.org/stable/c/84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff https://git.kernel.org/stable/c/8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 https://git.kernel.org/stable/c/a9ca4e80d23474f90841251f4ac0d941fa337a01 https://git.kernel.org/stable/c/bc3c2e58d73b28b9a8789fca84778ee165a72d13 https://git.kernel.org/stable/c/04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 https://git.kernel.org/stable/c/070398d32c5f3ab0e890374904ad94551c76aec4 https://git.kernel.org/stable/c/224453de8505aede1890f007be973925a3edf6a1 https://git.kernel.org/stable/c/512ee6d6041e007ef5bf200c6e388e172a2c5b24 https://git.kernel.org/stable/c/84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff https://git.kernel.org/stable/c/8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 https://git.kernel.org/stable/c/a9ca4e80d23474f90841251f4ac0d941fa337a01 https://git.kernel.org/stable/c/bc3c2e58d73b28b9a8789fca84778ee165a72d13

Frequently Asked Questions

What is CVE-2024-26778? +
In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. Although pixclock is checked in savagefb_decode_var(), but it is not checked properly in savagefb_probe(). Fix this by checking whether pixclock is zero in the function savagefb_check_var() before info->var.pixclock is used as the divisor. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-26778? +
CVE-2024-26778 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26778? +
CVE-2024-26778 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26778? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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