Related Vulnerabilities: CVE-2021-29648  

An issue was discovered in the Linux kernel before 5.11.11. The BPF subsystem does not properly consider that resolved_ids and resolved_sizes are intentionally uninitialized in the vmlinux BPF Type Format (BTF), which can cause a system crash upon an unexpected access attempt (in map_create in kernel/bpf/syscall.c or check_btf_info in kernel/bpf/verifier.c), aka CID-350a5c4dd245.

Severity Low

Remote No

Type Denial of service

Description

An issue was discovered in the Linux kernel before 5.11.11. The BPF subsystem does not properly consider that resolved_ids and resolved_sizes are intentionally uninitialized in the vmlinux BPF Type Format (BTF), which can cause a system crash upon an unexpected access attempt (in map_create in kernel/bpf/syscall.c or check_btf_info in kernel/bpf/verifier.c), aka CID-350a5c4dd245.

AVG-1748 linux-hardened 5.11.10.hardened1-1 Medium Vulnerable

AVG-1741 linux-lts 5.10.27-1 Low Vulnerable

AVG-1749 linux-zen 5.11.10.zen1-1 5.11.11.zen1-1 Medium Fixed

AVG-1747 linux 5.11.10.arch4-1 5.11.11.arch4-1 Medium Fixed

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.11.11&id=a9b2ab5db842da37e0f8d830d2a57688d77e3556