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wifi: libertas: cap SSID len in lbs_associate()

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[ Upstream commit c786794bd27b0d7a5fd9063695df83206009be59 ]

If the ssid_eid[1] length is more that 32 it leads to memory corruption.

Fixes: a910e4a94f ("cw1200: add driver for the ST-E CW1100 & CW1200 WLAN chipsets")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/2a40f5ec7617144aef412034c12919a4927d90ad.1756456951.git.dan.carpenter@linaro.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2025-08-29 15:48:35 +03:00 committed by Greg Kroah-Hartman
parent ec55148e51
commit edac153094
1 changed files with 6 additions and 3 deletions
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9
drivers/net/wireless/marvell/libertas/cfg.c
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@ -1101,10 +1101,13 @@ static int lbs_associate(struct lbs_private *priv,
/* add SSID TLV */
rcu_read_lock();
ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
if (ssid_eid)
pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
else
if (ssid_eid) {
u32 ssid_len = min(ssid_eid[1], IEEE80211_MAX_SSID_LEN);
pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_len);
} else {
lbs_deb_assoc("no SSID\n");
}
rcu_read_unlock();
/* add DS param TLV */