CVE-2024-26777

fbdev: sis: Error out if pixclock equals zero

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: sis: 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. In sisfb_check_var(), var->pixclock is used as a divisor to caculate drate before it is checked against zero. Fix this by checking it at the beginning. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e patch
https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207 patch
https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313 patch
https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1 patch
https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99 patch
https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb patch
https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b patch
https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52 patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html mailing list
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html mailing list

Frequently Asked Questions

What is the severity of CVE-2024-26777?
CVE-2024-26777 has been scored as a medium severity vulnerability.
How to fix CVE-2024-26777?
To fix CVE-2024-26777, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-26777 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-26777 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-26777?
CVE-2024-26777 affects Linux Linux, Linux Linux.
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