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(parent: 0cdfa9e) | patch
wifi: cfg80211: fix buffer overflow in elem comparison
authorJohannes Berg <johannes.berg@intel.com>
Fri, 25 Nov 2022 11:36:57 +0000 (12:36 +0100)
committerJohannes Berg <johannes.berg@intel.com>
Fri, 25 Nov 2022 11:43:05 +0000 (12:43 +0100)
commit9f16b5c82a025cd4c864737409234ddc44fb166a
tree25b5697b0e4155a75f8b9933b8bfb47862b4e94btree
parent0cdfa9e6f0915e3d243e2393bfa8a22e12d553b0commit | diff
wifi: cfg80211: fix buffer overflow in elem comparison

For vendor elements, the code here assumes that 5 octets
are present without checking. Since the element itself is
already checked to fit, we only need to check the length.

Reported-and-tested-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/wireless/scan.c diff | blob | blame | history
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