{"id":"CVE-2024-42142","summary":"net/mlx5: E-switch, Create ingress ACL when needed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-switch, Create ingress ACL when needed\n\nCurrently, ingress acl is used for three features. It is created only\nwhen vport metadata match and prio tag are enabled. But active-backup\nlag mode also uses it. It is independent of vport metadata match and\nprio tag. And vport metadata match can be disabled using the\nfollowing devlink command:\n\n # devlink dev param set pci/0000:08:00.0 name esw_port_metadata \\\n\tvalue false cmode runtime\n\nIf ingress acl is not created, will hit panic when creating drop rule\nfor active-backup lag mode. If always create it, there will be about\n5% performance degradation.\n\nFix it by creating ingress acl when needed. If esw_port_metadata is\ntrue, ingress acl exists, then create drop rule using existing\ningress acl. If esw_port_metadata is false, create ingress acl and\nthen create drop rule.","modified":"2026-04-16T04:35:35.761225141Z","published":"2024-07-30T07:46:35.929Z","related":["SUSE-SU-2024:3190-1","SUSE-SU-2024:3194-1","SUSE-SU-2024:3195-1","SUSE-SU-2024:3209-1","SUSE-SU-2024:3383-1","SUSE-SU-2024:3483-1","SUSE-SU-2025:20044-1","SUSE-SU-2025:20047-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42142.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3e3551f8702978cd2221d2614ca6d6727e785324"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83bc1a129f7fd0d7d05036ceb7ee69102624e320"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b20c2fb45470d0c7a603613c9cfa5d45720e17f2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc3ff8d3c05044de57865ebbb78cca8f7da3e595"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42142.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42142"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1749c4c51c16e3e078faae0a876d01bafb187a74"},{"fixed":"bc3ff8d3c05044de57865ebbb78cca8f7da3e595"},{"fixed":"3e3551f8702978cd2221d2614ca6d6727e785324"},{"fixed":"83bc1a129f7fd0d7d05036ceb7ee69102624e320"},{"fixed":"b20c2fb45470d0c7a603613c9cfa5d45720e17f2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42142.json"}}],"schema_version":"1.7.5"}