CVE-2026-43110
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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]
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1ae1e1caa428844e481231f6dbe9b4f475f1d52dPatch
- https://git.kernel.org/stable/c/2ae3ccb78c0a9ef5ee3d80d02ab319ac1d5af734
- https://git.kernel.org/stable/c/304950a467d83678bd0b0f46331882e2ac23b12dPatch
- https://git.kernel.org/stable/c/3ec7437e9d11374105c2c4e47ae671537729d7e6Patch
- https://git.kernel.org/stable/c/9c81bcc2c695e0082012a2a3d36a0eefaa51579c
- https://git.kernel.org/stable/c/9fca68c2512a362cad258e4df12a307bb2ee4b8ePatch
- https://git.kernel.org/stable/c/b329fbcf075949a038045d8e9b86ae3d5bbd8a54
- https://git.kernel.org/stable/c/b427c2b05222db36d32ee141609de6128e9091bbPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.