CVE-2021-47548

In the Linux kernel, the following vulnerability has been resolved: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() The if statement: if (port >= DSAF_GE_NUM) return; limits the value of port less than DSAF_GE_NUM (i.e., 8). However, if the value of port is 6 or 7, an array overflow could occur: port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off; because the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6). To fix this possible array overflow, we first check port and if it is greater than or equal to DSAF_MAX_PORT_NUM, the function returns.

• linux linux kernel (< 4.9.292) • linux linux kernel (>= 4.10 < 4.14.257) • linux linux kernel (>= 4.15 < 4.19.220) • linux linux kernel (>= 4.20 < 5.4.164) • linux linux kernel (>= 5.5 < 5.10.84) • linux linux kernel (>= 5.11 < 5.15.7) • linux linux kernel 5.16