Security Advisory

CVE-2021-29648

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-03-30 20:36:25

Last updated 2024-08-03 22:11:06

Assigner mitre

State PUBLISHED

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.

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