From: Kieran Frewen kieran.frewen@morsemicro.com
stable inclusion from stable-v5.10.118 commit 1cfbf6d3a7f6f844ec722bbaedce062cd757801c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L686
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 5d087aa759eb82b8208411913f6c2158bd85abc0 ]
Validate the S1G channel width input by user to ensure it matches that of the requested channel
Signed-off-by: Kieran Frewen kieran.frewen@morsemicro.com Signed-off-by: Bassem Dawood bassem@morsemicro.com Link: https://lore.kernel.org/r/20220420041321.3788789-2-kieran.frewen@morsemicro.... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- net/wireless/nl80211.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 12f44ad4e0d8..283447df5fc6 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2955,6 +2955,15 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) { chandef->width = nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]); + if (chandef->chan->band == NL80211_BAND_S1GHZ) { + /* User input error for channel width doesn't match channel */ + if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) { + NL_SET_ERR_MSG_ATTR(extack, + attrs[NL80211_ATTR_CHANNEL_WIDTH], + "bad channel width"); + return -EINVAL; + } + } if (attrs[NL80211_ATTR_CENTER_FREQ1]) { chandef->center_freq1 = nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);