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@@ -0,0 +1,29 @@
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+From: Felix Fietkau <[email protected]>
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+Date: Wed, 3 Jul 2024 12:10:01 +0200
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+Subject: [PATCH] wifi: mac80211: clear vif drv_priv after calling
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+ remove_interface
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+
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+Avoid reusing stale driver data when an interface is brought down and up
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+again. In order to avoid having to duplicate the memset in every single
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+driver, do it here.
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+
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+Signed-off-by: Felix Fietkau <[email protected]>
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+---
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+
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+--- a/net/mac80211/iface.c
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++++ b/net/mac80211/iface.c
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+@@ -684,8 +684,12 @@ static void ieee80211_do_stop(struct iee
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+
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+ fallthrough;
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+ default:
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+- if (going_down)
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+- drv_remove_interface(local, sdata);
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++ if (!going_down)
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++ break;
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++ drv_remove_interface(local, sdata);
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++
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++ /* Clear private driver data to prevent reuse */
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++ memset(sdata->vif.drv_priv, 0, local->hw.vif_data_size);
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+ }
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+
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+ ieee80211_recalc_ps(local);
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Felix Fietkau