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CVE-2025-40185

kernel: ice: ice_adapter: release xa entry on adapter allocation failure

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · November 12, 2025

Updated · June 30, 2026

Description

A NULL pointer dereference exists in the Linux kernel such that (ice: ice_adapter) fails to release a reserved XArray entry when ice_adapter_new() fails. As a result, subsequent insertions at the same index may return -EBUSY, which can lead to damage to system availability, integrity, and confidentiality.

Statement

ice_adapter_get() leaked a reserved XArray entry on adapter allocation failure, causing subsequent inserts to fail and potentially leading to a NULL pointer dereference. Impact is local DoS in the Intel ICE driver initialization path. Practical triggering typically requires privileged control over PCI/driver binding (hence for the CVSS the PR:H).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference