CVE-2026-45989 (GCVE-0-2026-45989)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:55 – Updated: 2026-06-14 17:46
VLAI
Title
of: unittest: fix use-after-free in testdrv_probe()
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 26409dd045892904b059dc411403e9c8ce7543ca , < 0ba03e06f037df704d9b032e36d417633e2326bc (git)
Affected: 26409dd045892904b059dc411403e9c8ce7543ca , < d68347b07b9801791c9eaab8f772770b52b8cd5c (git)
Affected: 26409dd045892904b059dc411403e9c8ce7543ca , < 5b6122a67a295f8a08b7c18d908a1bd974dfaec8 (git)
Affected: 26409dd045892904b059dc411403e9c8ce7543ca , < 6b2023286d2c6ed3bf964fb92e34c9c14d42eb69 (git)
Affected: 26409dd045892904b059dc411403e9c8ce7543ca , < 07fd339b2c253205794bea5d9b4b7548a4546c56 (git)
Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.86 , ≤ 6.12.* (semver)
Unaffected: 6.18.27 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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