CVE-2026-98813

The Linux kernel contains a vulnerability where the bpf memory allocator fails to maintain a reference to the map BTF within the destructor record. When bpf_mem_alloc_destroy() defers a final drain to a workqueue, bpf_map_free() may free the map's BTF while the worker still holds a duplicate reco...

CVE-2026-98813 bpf: Hold map BTF for the memory allocator destructor record

In the Linux kernel, the following vulnerability has been resolved: bpf: Hold map BTF for the memory allocator destructor record bpfmasetdtor duplicates map-record so that the bpfmemalloc destructor can release the special fields of hash and rhash map elements once the allocator frees them for...