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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]

PUBLISHED Reserved 2026-05-01 | Published 2026-05-06 | Updated 2026-05-08 | Assigner Linux




HIGH: 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Product status

Default status
unaffected

2880b86859967af710c72f7d34fb421a86a71e22 (git) before 3ec7437e9d11374105c2c4e47ae671537729d7e6
affected

2880b86859967af710c72f7d34fb421a86a71e22 (git) before 9fca68c2512a362cad258e4df12a307bb2ee4b8e
affected

2880b86859967af710c72f7d34fb421a86a71e22 (git) before 1ae1e1caa428844e481231f6dbe9b4f475f1d52d
affected

2880b86859967af710c72f7d34fb421a86a71e22 (git) before b427c2b05222db36d32ee141609de6128e9091bb
affected

2880b86859967af710c72f7d34fb421a86a71e22 (git) before 304950a467d83678bd0b0f46331882e2ac23b12d
affected

Default status
affected

3.9
affected

Any version before 3.9
unaffected

6.6.136 (semver)
unaffected

6.12.83 (semver)
unaffected

6.18.24 (semver)
unaffected

6.19.14 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/3ec7437e9d11374105c2c4e47ae671537729d7e6

git.kernel.org/...c/9fca68c2512a362cad258e4df12a307bb2ee4b8e

git.kernel.org/...c/1ae1e1caa428844e481231f6dbe9b4f475f1d52d

git.kernel.org/...c/b427c2b05222db36d32ee141609de6128e9091bb

git.kernel.org/...c/304950a467d83678bd0b0f46331882e2ac23b12d

cve.org (CVE-2026-43110)

nvd.nist.gov (CVE-2026-43110)

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