In the Linux kernel, the following vulnerability has been resolved: net: stmmac: make sure that ptp_rate is not 0 before configuring EST If the ptp_rate recorded earlier in the driver happens to be 0, this bogus value will propagate up to EST configuration, where it will trigger a division by 0. Prevent this division by 0 by adding the corresponding check and error code.
https://git.kernel.org/stable/c/d5e3bfdba0dc419499b801937128957f77503761
https://git.kernel.org/stable/c/cbefe2ffa7784525ec5d008ba87c7add19ec631a
https://git.kernel.org/stable/c/451ee661d0f6272017fa012f99617101aa8ddf2c