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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2021-47548

ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < 948968f8747650447c8f21c9fdba0e1973be040baffected
  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < abbd5faa0748d0aa95d5191d56ff7a17a6275bd1affected
  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < dd07f8971b81ad98cc754b179b331b57f35aa1ffaffected
  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < 99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6daffected
  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < 22519eff7df2d88adcc2568d86046ce1e2b52803affected
  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < fc7ffa7f10b9454a86369405d9814bf141b30627affected
  • 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca to < a66998e0fbf213d47d02813b9679426129d0d114affected

Linux Linux

Default version status: affected

  • 4.7affected
  • 0 to < 4.7unaffected
  • 4.9.292 to ≤ 4.9.*unaffected
  • 4.14.257 to ≤ 4.14.*unaffected
  • 4.19.220 to ≤ 4.19.*unaffected
  • 5.4.164 to ≤ 5.4.*unaffected
  • 5.10.84 to ≤ 5.10.*unaffected
  • 5.15.7 to ≤ 5.15.*unaffected
  • 5.16 to ≤ *unaffected

References