In the Linux kernel, the following vulnerability has been resolved: sysctl: Check range in proc_dointvec_ms_jiffies_minmax Add the range check to… (CVE-2026-98434)

The Linux kernel contained a vulnerability due to the removal of a range check in the function do_proc_int_conv_ms_jiffies_minmax, which is involved in sysctl parameter processing. The missing range check could potentially allow invalid values to be processed. The vulnerability was fixed by restoring the range check that had been removed by commit d174174c6776, which replaced the SYSCTL_INT_CONV_CUSTOM macro with functions but inadvertently omitted this validation.

The vulnerability could lead to improper handling of sysctl parameters related to jiffies timing values, potentially causing unexpected kernel behavior or instability. No specific exploit or active attacks are reported, and the exact impact beyond the need for input validation is not detailed.

A fix has been applied to the Linux kernel by restoring the missing range check in the affected function. Users should update to a kernel version that includes this fix once available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisory for the current remediation status.