{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2023-6622", "ASSIGNER": "secalert@redhat.com", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "NULL Pointer Dereference", "cweId": "CWE-476" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "n/a", "product": { "product_data": [ { "product_name": "kernel", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } } ] } }, { "vendor_name": "Red Hat", "product": { "product_data": [ { "product_name": "Red Hat Enterprise Linux 6", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Enterprise Linux 7", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Enterprise Linux 8", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } }, { "product_name": "Red Hat Enterprise Linux 9", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } } ] } }, { "vendor_name": "Fedora", "product": { "product_data": [ { "product_name": "Fedora", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://access.redhat.com/security/cve/CVE-2023-6622", "refsource": "MISC", "name": "https://access.redhat.com/security/cve/CVE-2023-6622" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253632", "refsource": "MISC", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2253632" }, { "url": "https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea", "refsource": "MISC", "name": "https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea" } ] }, "work_around": [ { "lang": "en", "value": "Mitigation for this issue is to skip loading the affected module \"netfilter\" onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278" } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank Xingyuan Mo ((IceSword Lab)) for reporting this issue." } ], "impact": { "cvss": [ { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" } ] } }