An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. CREATE(Triage):(User=admin) [CVE-2021-43389|https://nvd.nist.gov/vuln/detail/CVE-2021-43389]