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be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list

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When the parameter pmac_id_valid argument of be_cmd_get_mac_from_list() is
set to false, the driver may request the PMAC_ID from the firmware of the
network card, and this function will store that PMAC_ID at the provided
address pmac_id. This is the contract of this function.

However, there is a location within the driver where both
pmac_id_valid == false and pmac_id == NULL are being passed. This could
result in dereferencing a NULL pointer.

To resolve this issue, it is necessary to pass the address of a stub
variable to the function.

Fixes: 95046b927a ("be2net: refactor MAC-addr setup code")
Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru>
Link: https://patch.msgid.link/20260120113734.20193-1-a.vatoropin@crpt.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Andrey Vatoropin 2026-01-20 11:37:47 +00:00 committed by Jakub Kicinski
parent 2030c4358b
commit 8215794403
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/emulex/benet/be_cmds.c
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@ -3801,6 +3801,7 @@ int be_cmd_get_perm_mac(struct be_adapter *adapter, u8 *mac)
{
int status;
bool pmac_valid = false;
u32 pmac_id;
eth_zero_addr(mac);
@ -3813,7 +3814,7 @@ int be_cmd_get_perm_mac(struct be_adapter *adapter, u8 *mac)
adapter->if_handle, 0);
} else {
status = be_cmd_get_mac_from_list(adapter, mac, &pmac_valid,
NULL, adapter->if_handle, 0);
&pmac_id, adapter->if_handle, 0);
}
return status;