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| author | Felix Fietkau | 2024-10-02 10:38:32 +0000 |
|---|---|---|
| committer | Felix Fietkau | 2024-10-02 10:39:34 +0000 |
| commit | a9540a4e33599c01f0c1547d3e29d73fcd73d0ea (patch) | |
| tree | 795343a2198c2bbd2145feac4cf115d2a930580f | |
| parent | 123cb3793fb1bf86df8173d620d05a6169db56fc (diff) | |
| download | openwrt-a9540a4e33599c01f0c1547d3e29d73fcd73d0ea.tar.gz | |
mac80211: do not pass a stopped vif to the driver on get_txpower
Fixes potential crashes in various drivers when checking the status of
interfaces that are down
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/321-wifi-mac80211-do-not-pass-a-stopped-vif-to-the-drive.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/subsys/321-wifi-mac80211-do-not-pass-a-stopped-vif-to-the-drive.patch b/package/kernel/mac80211/patches/subsys/321-wifi-mac80211-do-not-pass-a-stopped-vif-to-the-drive.patch new file mode 100644 index 0000000000..f48fa38e5e --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/321-wifi-mac80211-do-not-pass-a-stopped-vif-to-the-drive.patch @@ -0,0 +1,24 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Wed, 2 Oct 2024 11:45:35 +0200 +Subject: [PATCH] wifi: mac80211: do not pass a stopped vif to the driver in + .get_txpower + +Avoid potentially crashing in the driver because of uninitialized private data + +Fixes: 5b3dc42b1b0d ("mac80211: add support for driver tx power reporting") +Cc: stable@vger.kernel.org +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/cfg.c ++++ b/net/mac80211/cfg.c +@@ -3134,7 +3134,8 @@ static int ieee80211_get_tx_power(struct + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + +- if (local->ops->get_txpower) ++ if (local->ops->get_txpower && ++ (sdata->flags & IEEE80211_SDATA_IN_DRIVER)) + return drv_get_txpower(local, sdata, dbm); + + if (local->emulate_chanctx) |