In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability. CREATE(Triage):(User=admin) CVE-2021-38166 (https://nvd.nist.gov/vuln/detail/CVE-2021-38166)
