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wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower

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BugLink: https://bugs.launchpad.net/bugs/2099996

commit 393b6bc174b0dd21bb2a36c13b36e62fc3474a23 upstream.

Avoid potentially crashing in the driver because of uninitialized private data

Fixes: 5b3dc42b1b ("mac80211: add support for driver tx power reporting")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/20241002095630.22431-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CVE-2024-50237
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Felix Fietkau
2025-02-25 22:59:22 +09:00
committed by Stefan Bader
parent db045a1ffb
commit bc6ee3fc1a
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/mac80211/cfg.c
+2 -1
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@@ -3080,7 +3080,8 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy,
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->use_chanctx)