From: Arnd Bergmann <[email protected]>
Two memory copies in this function copy from a short array into a longer one,
using the wrong size, which leads to an out-of-bounds access:
include/linux/fortify-string.h:592:4: error: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
__read_overflow2_field(q_size_field, size);
^
include/linux/fortify-string.h:592:4: error: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
2 errors generated.
Fixes: d889913205cf7 ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index f5ebebe806e0d..b8a8d33cc4187 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1637,9 +1637,9 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
arg->peer_nss = min(sta->deflink.rx_nss, max_nss);
memcpy(&arg->peer_he_cap_macinfo, he_cap->he_cap_elem.mac_cap_info,
- sizeof(arg->peer_he_cap_macinfo));
+ sizeof(he_cap->he_cap_elem.mac_cap_info));
memcpy(&arg->peer_he_cap_phyinfo, he_cap->he_cap_elem.phy_cap_info,
- sizeof(arg->peer_he_cap_phyinfo));
+ sizeof(he_cap->he_cap_elem.phy_cap_info));
arg->peer_he_ops = vif->bss_conf.he_oper.params;
/* the top most byte is used to indicate BSS color info */
--
2.39.2
Arnd Bergmann <[email protected]> wrote:
> Two memory copies in this function copy from a short array into a longer one,
> using the wrong size, which leads to an out-of-bounds access:
>
> include/linux/fortify-string.h:592:4: error: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
> __read_overflow2_field(q_size_field, size);
> ^
> include/linux/fortify-string.h:592:4: error: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
> 2 errors generated.
>
> Fixes: d889913205cf7 ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
> Signed-off-by: Arnd Bergmann <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>
Patch applied to ath-next branch of ath.git, thanks.
603cf6c2fcdc wifi: ath12k: fix memcpy array overflow in ath12k_peer_assoc_h_he()
--
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches