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9.8 Critical

CVE-2021-47548 In the Linux kernel, the following vulnerability has been resolved: ethernet: hisilicon: hns: hns_dsaf_misc: fix a…

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.

Affected products and versions

Product Affected versions Fixed in
Linux 5.16 earliest → < 5.16 5.16
Linux 5.15 earliest → < 5.15.7 5.15.7
Linux 5.10 earliest → < 5.10.84 5.10.84
Linux 5.4 earliest → < 5.4.164 5.4.164
Linux 4.19 earliest → < 4.19.220 4.19.220
Linux 4.14 earliest → < 4.14.257 4.14.257
Linux 4.9 earliest → < 4.9.292 4.9.292
Linux 4.7 No fix stated
linux_kernel 5.16 earliest → < 5.16 5.16

References

Timeline

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