by Kastro CVE-2021-47548
Linux Linux — ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
Description · from the CVE record
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
ProductAffectedFixed inSource
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < 948968f8747650447c8f21c9fdba0e1973be040b948968f8747650447c8f21c9fdba0e1973be040bCNA
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < abbd5faa0748d0aa95d5191d56ff7a17a6275bd1abbd5faa0748d0aa95d5191d56ff7a17a6275bd1CNA
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < dd07f8971b81ad98cc754b179b331b57f35aa1ffdd07f8971b81ad98cc754b179b331b57f35aa1ffCNA
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < 99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6dCNA
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < 22519eff7df2d88adcc2568d86046ce1e2b5280322519eff7df2d88adcc2568d86046ce1e2b52803CNA
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < fc7ffa7f10b9454a86369405d9814bf141b30627fc7ffa7f10b9454a86369405d9814bf141b30627CNA
Linux850bfa3b78ea8849fef78ed74f5f2ccf947db0ca – < a66998e0fbf213d47d02813b9679426129d0d114a66998e0fbf213d47d02813b9679426129d0d114CNA
Linux4.74.9.292CNA
linux_kernel1da177e4c3f4 – < 948968f87476948968f87476CISA-ADP
linux_kernel1da177e4c3f4 – < abbd5faa0748abbd5faa0748CISA-ADP
linux_kernel1da177e4c3f4 – < dd07f8971b81dd07f8971b81CISA-ADP
linux_kernel1da177e4c3f4 – < 99bb25cb675399bb25cb6753CISA-ADP
Scores by source
CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total