Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9 before 0b7d3e782027ac3b6fec56159e8e348042000aef; affected ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9 before fcad74f894ac89790084cc2e1ec61b08220941d1; affected ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9 before c9e455581e2ba87ee38c126e8dc49a424b9df0cf |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.31 through 6.12.*; unaffected 6.14.9 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.