of: unittest: fix use-after-free in testdrv_probe()
Summary
| CVE | CVE-2026-45989 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 14:17:16 UTC |
| Updated | 2026-06-16 13:52:52 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.000180000 probability, percentile 0.050770000 (date 2026-06-01)
Problem Types: CWE-416
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 26409dd045892904b059dc411403e9c8ce7543ca 0ba03e06f037df704d9b032e36d417633e2326bc git | Not specified |
| CNA | Linux | Linux | affected 26409dd045892904b059dc411403e9c8ce7543ca d68347b07b9801791c9eaab8f772770b52b8cd5c git | Not specified |
| CNA | Linux | Linux | affected 26409dd045892904b059dc411403e9c8ce7543ca 5b6122a67a295f8a08b7c18d908a1bd974dfaec8 git | Not specified |
| CNA | Linux | Linux | affected 26409dd045892904b059dc411403e9c8ce7543ca 6b2023286d2c6ed3bf964fb92e34c9c14d42eb69 git | Not specified |
| CNA | Linux | Linux | affected 26409dd045892904b059dc411403e9c8ce7543ca 07fd339b2c253205794bea5d9b4b7548a4546c56 git | Not specified |
| CNA | Linux | Linux | affected 6.6 | Not specified |
| CNA | Linux | Linux | unaffected 6.6 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.140 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.86 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.27 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.4 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.