CVE-2026-45989

HIGH EPSS 5.5%
Published May 27, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥6.6  –  <6.6.140
linuxlinux_kernel*≥6.7  –  <6.12.86
linuxlinux_kernel*≥6.13  –  <6.18.27
linuxlinux_kernel*≥6.19  –  <7.0.4

References 5

  • git.kernel.org https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c
    Patch