An issue was discovered in the Linux kernel before 5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows attackers to obtain sensitive information from kernel memory because of a partially uninitialized data structure, aka CID-50535249f624.
https://www.cisa.gov/news-events/ics-advisories/icsa-24-074-07
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11