wifi: brcmfmac: validate bsscfg indices in IF events

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: validate bsscfg indices in IF events brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check. Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array. [add missing wifi prefix]

Timeline

1. May 6, 2026, 7:40 AM UTCCVE published
2. Oct 16, 2026, 3:14 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 19, 2026, 7:06 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in b329fbcf075949a038045d8e9b86ae3d5bbd8a54; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in 2ae3ccb78c0a9ef5ee3d80d02ab319ac1d5af734; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in 9c81bcc2c695e0082012a2a3d36a0eefaa51579c; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in 3ec7437e9d11374105c2c4e47ae671537729d7e6; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in 9fca68c2512a362cad258e4df12a307bb2ee4b8e; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in 1ae1e1caa428844e481231f6dbe9b4f475f1d52d; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in b427c2b05222db36d32ee141609de6128e9091bb; From 2880b86859967af710c72f7d34fb421a86a71e22 · fixed in 304950a467d83678bd0b0f46331882e2ac23b12d

• Linux Linux

  3.9

• KernelLinux

  From 3.9.0 · fixed in 5.10.258; From 5.11.0 · fixed in 5.15.209; From 5.16.0 · fixed in 6.1.175; From 6.2.0 · fixed in 6.6.136; From 6.7.0 · fixed in 6.12.83; From 6.13.0 · fixed in 6.18.24; From 6.19.0 · fixed in 6.19.14

References 8