CVE-2026-98948mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_flower: Fix port range register leak in tmplt_create() mlxsw_sp_flower_tmplt_create() parses a flow_cls_offload template into a stack-local struct mlxsw_sp_acl_rule_info purely to compute rulei.values.elusage. Parsing can acquire port range registers via mlxsw_sp_flower_parse_ports_range(), but since this rulei never goes through mlxsw_sp_acl_rulei_destroy(), those registers were never released, including through chain template deletion. Factor out of mlxsw_sp_acl_rulei_destroy() the code to actually release the necessary resources and call from mlxsw_sp_flower_tmplt_create() to plug the leak. The issue was found during a review of Wentao Liang's patch referenced below.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 23, 2026
- First seen by InfoSec Signals
- Oct 23, 2026
Affected products
Linux Linux linux:linux (from the name) | from fe22f7410527c2077223b5fd0fc0458db912f0db before 41ad5bcf0219aaebf8ffb052c5e8177479330cde; from fe22f7410527c2077223b5fd0fc0458db912f0db before c8e934287debb29c6ded86b21e49fc72e186d15e; from fe22f7410527c2077223b5fd0fc0458db912f0db before 3938430f0237c59ca08d6a366e7657b2b7f8d0bb; from fe22f7410527c2077223b5fd0fc0458db912f0db before 4eaf1285b5c1e42f80e47f9fe0d391e70418db02; from fe22f7410527c2077223b5fd0fc0458db912f0db before 7ea07afb230f1342ab0f9365edd0aae137f425d3 | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.