CVE-2021-47548
Description
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.
How to fix
- linux linux_kernel4.9.292, 4.14.257, 4.19.220, 5.4.164, 5.10.84, 5.15.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.9.292, 4.10 ≤ v < 4.14.257, 4.15 ≤ v < 4.19.220, 4.20 ≤ v < 5.4.164, 5.5 ≤ v < 5.10.84, 5.11 ≤ v < 5.15.7, 5.16 | 4.9.292, 4.14.257, 4.19.220, 5.4.164, 5.10.84, 5.15.7 |
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