Riskcovery

CVE-2026-80940

wifi: rtw88: pci: fix resource leak on failed NAPI setup

State
Published
Severity
Not scored
Published
Sep 11, 2026
Updated
Oct 19, 2026
Reserved
Aug 26, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d0bcb10e7b94861c714ab1e62c98bf8abaa37527 to before 481fff9bda01720c70b19fb260808145a3f21594Affected
  • d0bcb10e7b94861c714ab1e62c98bf8abaa37527 to before 34a505071d1ffc5ebf3dc3cd16d2a12b044bcc84Affected
  • d0bcb10e7b94861c714ab1e62c98bf8abaa37527 to before b1596e212ab1739930b25b9d3daf6b5cd307b537Affected
  • d0bcb10e7b94861c714ab1e62c98bf8abaa37527 to before e779df4806cd29cbcca5c9dc0a1073662c76b889Affected
LinuxLinux
  • 6.11Affected
  • before 6.11Not affected
  • 6.12.109 through 6.12.*Not affected
  • 6.18.50 through 6.18.*Not affected
  • 7.2.4 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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