{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47548","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-24T15:02:54.829Z","datePublished":"2024-05-24T15:09:52.634Z","dateUpdated":"2025-12-18T11:37:52.400Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-12-18T11:37:52.400Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()\n\nThe if statement:\n  if (port >= DSAF_GE_NUM)\n        return;\n\nlimits the value of port less than DSAF_GE_NUM (i.e., 8).\nHowever, if the value of port is 6 or 7, an array overflow could occur:\n  port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;\n\nbecause the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6).\n\nTo fix this possible array overflow, we first check port and if it is\ngreater than or equal to DSAF_MAX_PORT_NUM, the function returns."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c"],"versions":[{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"948968f8747650447c8f21c9fdba0e1973be040b","status":"affected","versionType":"git"},{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"abbd5faa0748d0aa95d5191d56ff7a17a6275bd1","status":"affected","versionType":"git"},{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"dd07f8971b81ad98cc754b179b331b57f35aa1ff","status":"affected","versionType":"git"},{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d","status":"affected","versionType":"git"},{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"22519eff7df2d88adcc2568d86046ce1e2b52803","status":"affected","versionType":"git"},{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"fc7ffa7f10b9454a86369405d9814bf141b30627","status":"affected","versionType":"git"},{"version":"850bfa3b78ea8849fef78ed74f5f2ccf947db0ca","lessThan":"a66998e0fbf213d47d02813b9679426129d0d114","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c"],"versions":[{"version":"4.7","status":"affected"},{"version":"0","lessThan":"4.7","status":"unaffected","versionType":"semver"},{"version":"4.9.292","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.257","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.220","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.164","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.84","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.7","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"4.9.292"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"4.14.257"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"4.19.220"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.4.164"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.10.84"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.15.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b"},{"url":"https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1"},{"url":"https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff"},{"url":"https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d"},{"url":"https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803"},{"url":"https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627"},{"url":"https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114"}],"title":"ethernet: 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