cvelist/2023/4xxx/CVE-2023-4194.json

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        "STATE": "PUBLIC"
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    "description": {
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            {
                "lang": "eng",
                "value": "A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 (\"tun: tun_chr_open(): correctly initialize socket uid\"), - 66b2c338adce (\"tap: tap_open(): correctly initialize socket uid\"), pass \"inode->i_uid\" to sock_init_data_uid() as the last parameter and that turns out to not be accurate."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
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                "description": [
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                        "lang": "eng",
                        "value": "Incorrect Authorization",
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    "references": {
        "reference_data": [
            {
                "url": "https://access.redhat.com/errata/RHSA-2023:6583",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2023:6583"
            },
            {
                "url": "https://access.redhat.com/security/cve/CVE-2023-4194",
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2023-4194"
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                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2229498",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2229498"
            },
            {
                "url": "https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/",
                "refsource": "MISC",
                "name": "https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/"
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                "url": "https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/",
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                "name": "https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/"
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    "credits": [
        {
            "lang": "en",
            "value": "This issue was discovered by Laszlo Ersek (Red Hat)."
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    "impact": {
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            {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
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