{"id":"CVE-2022-49582","summary":"net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering\n\nThe \"ds\" iterator variable used in dsa_port_reset_vlan_filtering() -\u003e\ndsa_switch_for_each_port() overwrites the \"dp\" received as argument,\nwhich is later used to call dsa_port_vlan_filtering() proper.\n\nAs a result, switches which do enter that code path (the ones with\nvlan_filtering_is_global=true) will dereference an invalid dp in\ndsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge.\n\nUse a dedicated \"other_dp\" iterator variable to avoid this from\nhappening.","modified":"2026-08-12T03:51:40.439788590Z","published":"2025-02-26T02:23:19.626Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49582.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1699b4d502eda3c7ea4070debad3ee570b5091b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3240e12fe203a3a79b9814e83327106b770ed7b0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49582.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49582"},{"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":"d0004a020bb50263de0e3e775c7b7c7a003e0e0c"},{"fixed":"3240e12fe203a3a79b9814e83327106b770ed7b0"},{"fixed":"1699b4d502eda3c7ea4070debad3ee570b5091b1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49582.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.18.15"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49582.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}