Description
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.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4aece6a19cf7f474f15eb861ba74db4479884ce3, < 810f6b3a29ac96fdc16909132b31627dae6824c2; >= 4aece6a19cf7f474f15eb861ba74db4479884ce3, < ed54460caf5b5aa65ec03c9a6032d831f39f19f5; >= 4aece6a19cf7f474f15eb861ba74db4479884ce3, < 7510a5b9edec9d9536a4e69f10edfb2592e6cf7f; >= 4aece6a19cf7f474f15eb861ba74db4479884ce3, < f4d23937e1c41995c2f54af26c89b5e48a41c299; >= 4aece6a19cf7f474f15eb861ba74db4479884ce3, < f31f3c042e024aef437cda42f0424ae8d4594b6c; >= 4aece6a19cf7f474f15eb861ba74db4479884ce3, < 8fa4804fe62ca4155a2d8fc2789d630376cbf2fc |
| Linux | Linux | 2.6.31 |
References
- https://git.kernel.org/stable/c/7510a5b9edec9d9536a4e69f10edfb2592e6cf7f
- https://git.kernel.org/stable/c/810f6b3a29ac96fdc16909132b31627dae6824c2
- https://git.kernel.org/stable/c/8fa4804fe62ca4155a2d8fc2789d630376cbf2fc
- https://git.kernel.org/stable/c/ed54460caf5b5aa65ec03c9a6032d831f39f19f5
- https://git.kernel.org/stable/c/f31f3c042e024aef437cda42f0424ae8d4594b6c
- https://git.kernel.org/stable/c/f4d23937e1c41995c2f54af26c89b5e48a41c299
Timeline
- Published
- Sep 17, 2026
- Last modified
- Oct 30, 2026
- NVD status
- Received