wifi: rtw88: pci: fix resource leak on failed NAPI setup (Linux Linux)

CVE-2026-80940
Not available

At a glance

Source
NVD
EPSS
EPSS 0.17 % · percentile 6 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Received

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.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected d0bcb10e7b94861c714ab1e62c98bf8abaa37527 < 481fff9bda01720c70b19fb260808145a3f21594 ; affected d0bcb10e7b94861c714ab1e62c98bf8abaa37527 < 34a505071d1ffc5ebf3dc3cd16d2a12b044bcc84 ; affected d0bcb10e7b94861c714ab1e62c98bf8abaa37527 < b1596e212ab1739930b25b9d3daf6b5cd307b537 ; affected d0bcb10e7b94861c714ab1e62c98bf8abaa37527 < e779df4806cd29cbcca5c9dc0a1073662c76b889
Linux · Linuxaffected 6.11 ; unaffected 0 < 6.11 ; unaffected 6.12.109 ≤ 6.12.* ; unaffected 6.18.50 ≤ 6.18.* ; unaffected 7.2.4 ≤ 7.2.* ; unaffected 7.3 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD