Access of Uninitialized Pointer Affecting bpftool package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.61% (49th percentile)

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  • Snyk IDSNYK-CENTOS7-BPFTOOL-21102030
  • published16 Oct 2026
  • disclosed17 Sept 2026

Introduced: 17 Sep 2026

CVE-2026-90104  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

There is no fixed version for Centos:7 bpftool.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1