In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix memory leak in tcindexpartialdestroy_work
Syzbot reported memory leak in tcindexsetparms(). The problem was in non-freed perfect hash in tcindexpartialdestroy_work().
In tcindexsetparms() new tcindexdata is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindexpartialdestroywork() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.