CVE-2025-38054

Description

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Limit signal/freq counts in summary output functions The debugfs summary output could access uninitialized elements in the freq_in[] and signal_out[] arrays, causing NULL pointer dereferences and triggering a kernel Oops (page_fault_oops). This patch adds u8 fields (nr_freq_in, nr_signal_out) to track the number of initialized elements, with a maximum of 4 per array. The summary output functions are updated to respect these limits, preventing out-of-bounds access and ensuring safe array handling. Widen the label variables because the change confuses GCC about max length of the strings.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://git.kernel.org/stable/c/0b7d3e782027ac3b6fec56159e8e348042000aef ↗
• https://git.kernel.org/stable/c/fcad74f894ac89790084cc2e1ec61b08220941d1 ↗
• https://git.kernel.org/stable/c/c9e455581e2ba87ee38c126e8dc49a424b9df0cf ↗