CyberRota Analysis
AI-GeneratedThe vulnerability in the Linux kernel affects the libceph component, where a missing guard during CRUSH type name lookup can lead to a null pointer dereference. This flaw allows for potential crashes during localized read selection when encountering malformed parent buckets. System administrators and developers using affected Linux distributions should prioritize this issue to ensure stability and prevent service interruptions.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: libceph: guard missing CRUSH type name lookup Localized read selection can walk a parent bucket whose name exists in the CRUSH map while its type has no matching entry in type_names. get_immediate_parent() then dereferences a NULL type_cn and passes an invalid pointer into strcmp(), causing a null-ptr-deref. Skip such malformed parent buckets unless both the bucket name and type name metadata are present. This keeps malformed hierarchy data from crashing locality lookup and safely falls back to "not local". [ idryomov: add WARN_ON_ONCE ]