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.
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.debian.org/security/2022/dsa-5096
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15