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wifi: brcmfmac: cyw: Fix __counted_by to be LE variant

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In brcmf_cyw_mgmt_tx() the "len" counter of the struct
brcmf_mf_params_le::data flexible array is stored as little-endian via
cpu_to_le16() so the __counted_by_le() variant must be used:

	struct brcmf_mf_params_le *mf_params;
	...
	mf_params_len = offsetof(struct brcmf_mf_params_le, data) +
			(len - DOT11_MGMT_HDR_LEN);
	mf_params = kzalloc(mf_params_len, GFP_KERNEL);
	...
        mf_params->len = cpu_to_le16(len - DOT11_MGMT_HDR_LEN);

Fixes: 66f909308a ("wifi: brcmfmac: cyw: support external SAE authentication in station mode")
Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>>
Link: https://patch.msgid.link/20250721181810.work.575-kees@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Kees Cook 2025-07-21 11:18:14 -07:00 committed by Johannes Berg
parent 708243c62e
commit 204bb85286
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cyw/fwil_types.h
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@ -80,7 +80,7 @@ struct brcmf_mf_params_le {
u8 da[ETH_ALEN];
u8 bssid[ETH_ALEN];
__le32 packet_id;
u8 data[] __counted_by(len);
u8 data[] __counted_by_le(len);
};
#endif /* CYW_FWIL_TYPES_H_ */