CVE-2026-98948
Received
Received - Intake
Memory Leak in Mellanox Spectrum mlxsw Driver
Vulnerability report for CVE-2026-98948, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-23
Last updated on: 2026-10-23
Assigner: kernel.org
Description
Description
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 Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | fe22f7410527c2077223b5fd0fc0458db912f0db |
| Linux | Linux | fe22f7410527c2077223b5fd0fc0458db912f0db |
| Linux | Linux | fe22f7410527c2077223b5fd0fc0458db912f0db |
| Linux | Linux | fe22f7410527c2077223b5fd0fc0458db912f0db |
| Linux | Linux | fe22f7410527c2077223b5fd0fc0458db912f0db |
| Linux | Linux | 6.6 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
