CVE-2026-80940
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.
How to fix
- Linux Linux481fff9bda01720c70b19fb260808145a3f21594, 34a505071d1ffc5ebf3dc3cd16d2a12b044bcc84, b1596e212ab1739930b25b9d3daf6b5cd307b537, e779df4806cd29cbcca5c9dc0a1073662c76b889 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | d0bcb10e7b94861c714ab1e62c98bf8abaa37527 ≤ v < 481fff9bda01720c70b19fb260808145a3f21594, d0bcb10e7b94861c714ab1e62c98bf8abaa37527 ≤ v < 34a505071d1ffc5ebf3dc3cd16d2a12b044bcc84, d0bcb10e7b94861c714ab1e62c98bf8abaa37527 ≤ v < b1596e212ab1739930b25b9d3daf6b5cd307b537, d0bcb10e7b94861c714ab1e62c98bf8abaa37527 ≤ v < e779df4806cd29cbcca5c9dc0a1073662c76b889, 6.11 | 481fff9bda01720c70b19fb260808145a3f21594, 34a505071d1ffc5ebf3dc3cd16d2a12b044bcc84, b1596e212ab1739930b25b9d3daf6b5cd307b537, e779df4806cd29cbcca5c9dc0a1073662c76b889 |
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