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Vulnerability record · CVE-2026-43110 · published 6 May 2026

CVE-2026-43110: Linux kernel vulnerability

Linux · Linux Kernel

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]

8.8 CVSS 3.1 High EPSS 0.41% · top 67.1%
8.8CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/1ae1e1caa428844e481231f6dbe9b4f475f1d52d Patch
https://git.kernel.org/stable/c/2ae3ccb78c0a9ef5ee3d80d02ab319ac1d5af734
https://git.kernel.org/stable/c/304950a467d83678bd0b0f46331882e2ac23b12d Patch
https://git.kernel.org/stable/c/3ec7437e9d11374105c2c4e47ae671537729d7e6 Patch
https://git.kernel.org/stable/c/9c81bcc2c695e0082012a2a3d36a0eefaa51579c
https://git.kernel.org/stable/c/9fca68c2512a362cad258e4df12a307bb2ee4b8e Patch
https://git.kernel.org/stable/c/b329fbcf075949a038045d8e9b86ae3d5bbd8a54
https://git.kernel.org/stable/c/b427c2b05222db36d32ee141609de6128e9091bb Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43110), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.