CVE-2026-90104
NFSv4.1: zero referring call lists before decoding
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
| Last Updated | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
4aece6a19cf7f474f15eb861ba74db4479884ce3 < 810f6b3a29ac96fdc16909132b31627dae6824c2 4aece6a19cf7f474f15eb861ba74db4479884ce3 < ed54460caf5b5aa65ec03c9a6032d831f39f19f5 4aece6a19cf7f474f15eb861ba74db4479884ce3 < 7510a5b9edec9d9536a4e69f10edfb2592e6cf7f 4aece6a19cf7f474f15eb861ba74db4479884ce3 < f4d23937e1c41995c2f54af26c89b5e48a41c299 4aece6a19cf7f474f15eb861ba74db4479884ce3 < f31f3c042e024aef437cda42f0424ae8d4594b6c 4aece6a19cf7f474f15eb861ba74db4479884ce3 < 8fa4804fe62ca4155a2d8fc2789d630376cbf2fc
Linux / Linux
2.6.31
References
git.kernel.org: https://git.kernel.org/stable/c/810f6b3a29ac96fdc16909132b31627dae6824c2 git.kernel.org: https://git.kernel.org/stable/c/ed54460caf5b5aa65ec03c9a6032d831f39f19f5 git.kernel.org: https://git.kernel.org/stable/c/7510a5b9edec9d9536a4e69f10edfb2592e6cf7f git.kernel.org: https://git.kernel.org/stable/c/f4d23937e1c41995c2f54af26c89b5e48a41c299 git.kernel.org: https://git.kernel.org/stable/c/f31f3c042e024aef437cda42f0424ae8d4594b6c git.kernel.org: https://git.kernel.org/stable/c/8fa4804fe62ca4155a2d8fc2789d630376cbf2fc