{"id":"CVE-2026-98948","state":"PUBLISHED","title":"mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum_flower: Fix port range register leak in tmplt_create()\n\nmlxsw_sp_flower_tmplt_create() parses a flow_cls_offload template\ninto a stack-local struct mlxsw_sp_acl_rule_info purely to compute\nrulei.values.elusage. Parsing can acquire port range registers via\nmlxsw_sp_flower_parse_ports_range(), but since this rulei never goes\nthrough mlxsw_sp_acl_rulei_destroy(), those registers were never\nreleased, including through chain template deletion.\n\nFactor out of mlxsw_sp_acl_rulei_destroy() the code to actually\nrelease the necessary resources and call from\nmlxsw_sp_flower_tmplt_create() to plug the leak.\n\nThe issue was found during a review of Wentao Liang's patch referenced\nbelow.","publishedAt":"2026-10-23T12:19:08.043Z","updatedAt":"2026-10-23T12:19:08.043Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"41ad5bcf0219aaebf8ffb052c5e8177479330cde","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"c8e934287debb29c6ded86b21e49fc72e186d15e","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"3938430f0237c59ca08d6a366e7657b2b7f8d0bb","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"4eaf1285b5c1e42f80e47f9fe0d391e70418db02","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"7ea07afb230f1342ab0f9365edd0aae137f425d3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c"]}],"references":["https://git.kernel.org/stable/c/41ad5bcf0219aaebf8ffb052c5e8177479330cde","https://git.kernel.org/stable/c/c8e934287debb29c6ded86b21e49fc72e186d15e","https://git.kernel.org/stable/c/3938430f0237c59ca08d6a366e7657b2b7f8d0bb","https://git.kernel.org/stable/c/4eaf1285b5c1e42f80e47f9fe0d391e70418db02","https://git.kernel.org/stable/c/7ea07afb230f1342ab0f9365edd0aae137f425d3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98948.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98948","state":"PUBLISHED","datePublished":"2026-10-23T12:19:08.043Z","dateUpdated":"2026-10-23T12:19:08.043Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.382Z"},"containers":{"cna":{"title":"mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum_flower: Fix port range register leak in tmplt_create()\n\nmlxsw_sp_flower_tmplt_create() parses a flow_cls_offload template\ninto a stack-local struct mlxsw_sp_acl_rule_info purely to compute\nrulei.values.elusage. Parsing can acquire port range registers via\nmlxsw_sp_flower_parse_ports_range(), but since this rulei never goes\nthrough mlxsw_sp_acl_rulei_destroy(), those registers were never\nreleased, including through chain template deletion.\n\nFactor out of mlxsw_sp_acl_rulei_destroy() the code to actually\nrelease the necessary resources and call from\nmlxsw_sp_flower_tmplt_create() to plug the leak.\n\nThe issue was found during a review of Wentao Liang's patch referenced\nbelow."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"41ad5bcf0219aaebf8ffb052c5e8177479330cde","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"c8e934287debb29c6ded86b21e49fc72e186d15e","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"3938430f0237c59ca08d6a366e7657b2b7f8d0bb","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"4eaf1285b5c1e42f80e47f9fe0d391e70418db02","versionType":"git"},{"version":"fe22f7410527c2077223b5fd0fc0458db912f0db","status":"affected","lessThan":"7ea07afb230f1342ab0f9365edd0aae137f425d3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/41ad5bcf0219aaebf8ffb052c5e8177479330cde"},{"url":"https://git.kernel.org/stable/c/c8e934287debb29c6ded86b21e49fc72e186d15e"},{"url":"https://git.kernel.org/stable/c/3938430f0237c59ca08d6a366e7657b2b7f8d0bb"},{"url":"https://git.kernel.org/stable/c/4eaf1285b5c1e42f80e47f9fe0d391e70418db02"},{"url":"https://git.kernel.org/stable/c/7ea07afb230f1342ab0f9365edd0aae137f425d3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-23T12:19:08.043Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}