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wifi: cfg80211: validate HE operation element parsing

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BugLink: https://bugs.launchpad.net/bugs/2074091

commit 4dc3a3893dae5a7f73e5809273aca0f1f3548d55 upstream.

Validate that the HE operation element has the correct
length before parsing it.

Cc: stable@vger.kernel.org
Fixes: 645f3d8512 ("wifi: cfg80211: handle UHB AP and STA power type")
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240523120533.677025eb4a92.I44c091029ef113c294e8fe8b9bf871bf5dbeeb27@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Johannes Berg
2024-05-23 12:05:33 +02:00
committed by Roxana Nicolescu
parent 658b0e92e6
commit 332dfb902f
1 changed files with 2 additions and 1 deletions
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net/wireless/scan.c
+2 -1
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@@ -3068,7 +3068,8 @@ static bool cfg80211_uhb_power_type_valid(const u8 *ie,
struct ieee80211_he_operation *he_oper;
tmp = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ie, ielen);
if (tmp && tmp->datalen >= sizeof(*he_oper) + 1) {
if (tmp && tmp->datalen >= sizeof(*he_oper) + 1 &&
tmp->datalen >= ieee80211_he_oper_size(tmp->data + 1)) {
const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
he_oper = (void *)&tmp->data[1];