wifi: rtw88: pci: fix resource leak on failed NAPI setup
rtw_pci_probe() allocates PCI resources through
rtw_pci_setup_resource() before it sets up NAPI. If
rtw_pci_napi_init() fails, the error path jumps straight to
err_pci_declaim and skips rtw_pci_destroy(), leaving the PCI
resources allocated by rtw_pci_setup_resource() behind.
Add a dedicated cleanup label for the NAPI setup failure path so probe
destroys the PCI resources.
The bug was first flagged by an experimental analysis tool we are
developing for kernel memory-management bugs while analyzing current
mainline kernels. The tool is still under development and is not yet
publicly available. Manual inspection confirms that the bug is still
present in v7.1-rc7.
An x86_64 allyesconfig build showed no new warnings. As we do not have a
suitable rtw88 PCI board to test with, no runtime testing was able to be
performed.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
No data available yet.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Fri, 11 Sep 2026 23:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: pci: fix resource leak on failed NAPI setup rtw_pci_probe() allocates PCI resources through rtw_pci_setup_resource() before it sets up NAPI. If rtw_pci_napi_init() fails, the error path jumps straight to err_pci_declaim and skips rtw_pci_destroy(), leaving the PCI resources allocated by rtw_pci_setup_resource() behind. Add a dedicated cleanup label for the NAPI setup failure path so probe destroys the PCI resources. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing current mainline kernels. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc7. An x86_64 allyesconfig build showed no new warnings. As we do not have a suitable rtw88 PCI board to test with, no runtime testing was able to be performed. | |
| Title | wifi: rtw88: pci: fix resource leak on failed NAPI setup | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-09-11T19:42:13.084Z
Reserved: 2026-08-26T14:34:25.803Z
Link: CVE-2026-80940
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-11T20:18:58.757
Modified: 2026-09-11T20:18:58.757
Link: CVE-2026-80940
Redhat
No data.
OpenCVE Enrichment
No data.
No weakness.