Fullway Wang

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The issue is related to a divide-by-zero error in the `savagefb check var()` function. A userspace program can pass any values to the driver through the `ioctl()` interface, potentially causing a divide-by-zero error if the `pixclock` value is not properly checked. The error occurs because `pixclock` is not checked properly in `savagefb probe()`, although it is checked in `savagefb decode var()`. The fix involves checking whether `pixclock` is zero in the `savagefb check var()` function before using `info->var.pixclock` as the divisor. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The vulnerability is related to a divide-by-zero error in the `sisfb check var()` function. This error can occur when the `var->pixclock` value is used as a divisor to calculate `drate` before it is checked against zero. The issue can be exploited by a user-space program passing any value to the driver through the `ioctl()` interface, potentially causing a denial-of-service. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.