mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.160, 6.12.113, 6.18.57, 7.2.11
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Linux Linux
From fe22f7410527c2077223b5fd0fc0458db912f0db · fixed in 41ad5bcf0219aaebf8ffb052c5e8177479330cde; From fe22f7410527c2077223b5fd0fc0458db912f0db · fixed in c8e934287debb29c6ded86b21e49fc72e186d15e; From fe22f7410527c2077223b5fd0fc0458db912f0db · fixed in 3938430f0237c59ca08d6a366e7657b2b7f8d0bb; From fe22f7410527c2077223b5fd0fc0458db912f0db · fixed in 4eaf1285b5c1e42f80e47f9fe0d391e70418db02; From fe22f7410527c2077223b5fd0fc0458db912f0db · fixed in 7ea07afb230f1342ab0f9365edd0aae137f425d3
- Linux Linux
6.6
- KernelLinux
From 6.6.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.113; From 6.13.0 · fixed in 6.18.57; From 6.19.0 · fixed in 7.2.11