CVE-2026-90104

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

NFSv4.1: zero referring call lists before decoding

decode_cb_sequence_args() allocates csa_rclists with kmalloc_objs(), so

each referring_call_list starts uninitialized. decode_rc_list() assigns

rcl_refcalls only when rcl_nrefcalls is nonzero. A valid list with zero

referring calls therefore leaves the pointer uninitialized, and

nfs4_callback_sequence() later passes stale slab contents to kfree().

Allocate csa_rclists with kzalloc_objs() so every rcl_refcalls member is

NULL from the beginning, including valid empty referring call lists.