5.10-stable review patch. If anyone has any objections, please let me know.
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From: Jozef Hopko jozef.hopko@altana.com
[ Upstream commit 39ab8fff623053a50951b659e5f6b72343d7d78c ]
Commit 205c50306acf ("wifi: wilc1000: fix RCU usage in connect path") made sure that the IEs data was manipulated under the relevant RCU section. Unfortunately, while doing so, the commit brought a faulty implicit cast from int to u8 on the ies_len variable, making the parsing fail to be performed correctly if the IEs block is larger than 255 bytes. This failure can be observed with Access Points appending a lot of IEs TLVs in their beacon frames (reproduced with a Pixel phone acting as an Access Point, which brough 273 bytes of IE data in my testing environment).
Fix IEs parsing by removing this undesired implicit cast.
Fixes: 205c50306acf ("wifi: wilc1000: fix RCU usage in connect path") Signed-off-by: Jozef Hopko jozef.hopko@altana.com Signed-off-by: Alexis Lothoré alexis.lothore@bootlin.com Acked-by: Ajay Singh ajay.kathat@microchip.com Signed-off-by: Kalle Valo kvalo@kernel.org Link: https://patch.msgid.link/20240701-wilc_fix_ies_data-v1-1-7486cbacf98a@bootli... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/microchip/wilc1000/hif.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/microchip/wilc1000/hif.c b/drivers/net/wireless/microchip/wilc1000/hif.c index 457386f9de990..3f167bf4eef35 100644 --- a/drivers/net/wireless/microchip/wilc1000/hif.c +++ b/drivers/net/wireless/microchip/wilc1000/hif.c @@ -364,7 +364,8 @@ void *wilc_parse_join_bss_param(struct cfg80211_bss *bss, struct ieee80211_p2p_noa_attr noa_attr; const struct cfg80211_bss_ies *ies; struct wilc_join_bss_param *param; - u8 rates_len = 0, ies_len; + u8 rates_len = 0; + int ies_len; int ret;
param = kzalloc(sizeof(*param), GFP_KERNEL);