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CVE-2026-45989

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
27/05/2026
Last modified:
16/06/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> of: unittest: fix use-after-free in testdrv_probe()<br /> <br /> The function testdrv_probe() retrieves the device_node from the PCI<br /> device, applies an overlay, and then immediately calls of_node_put(dn).<br /> This releases the reference held by the PCI core, potentially freeing<br /> the node if the reference count drops to zero. Later, the same freed<br /> pointer &amp;#39;dn&amp;#39; is passed to of_platform_default_populate(), leading to a<br /> use-after-free.<br /> <br /> The reference to pdev-&gt;dev.of_node is owned by the device model and<br /> should not be released by the driver. Remove the erroneous of_node_put()<br /> to prevent premature freeing.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.6 (including) 6.6.140 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.86 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.27 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools