CVE-2026-93211

In the Linux kernel, the following vulnerability has been resolved:

nfsd: initialize DRC hash table before registering shrinker

shrinker_register() precedes the INIT_LIST_HEAD loop and the

drc_hashsize store. On weakly-ordered architectures (arm64, ppc),

a shrinker scan can observe drc_hashsize before the bucket list

heads are initialized, causing a NULL deref in the DRC shrinker

callback.

Move bucket initialization and the drc_hashsize store before

shrinker_register() so the hash table is fully initialized before

it becomes visible to the shrinker.