cvelist/2023/0xxx/CVE-2023-0160.json

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        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "description": {
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                "lang": "eng",
                "value": "A deadlock flaw was found in the Linux kernel\u2019s BPF subsystem. This flaw allows a local user to potentially crash the system."
            }
        ]
    },
    "problemtype": {
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                        "value": "Deadlock",
                        "cweId": "CWE-833"
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        ]
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                {
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                    "product": {
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    "references": {
        "reference_data": [
            {
                "url": "https://access.redhat.com/security/cve/CVE-2023-0160",
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2023-0160"
            },
            {
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2159764",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2159764"
            },
            {
                "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed17aa92dc56",
                "refsource": "MISC",
                "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed17aa92dc56"
            },
            {
                "url": "https://lore.kernel.org/all/CABcoxUayum5oOqFMMqAeWuS8+EzojquSOSyDA3J_2omY=2EeAg@mail.gmail.com/",
                "refsource": "MISC",
                "name": "https://lore.kernel.org/all/CABcoxUayum5oOqFMMqAeWuS8+EzojquSOSyDA3J_2omY=2EeAg@mail.gmail.com/"
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    "work_around": [
        {
            "lang": "en",
            "value": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl.   \n\nThis would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\n\nFor the Red Hat Enterprise Linux 7 the eBPF for unprivileged users is always disabled.\nFor the Red Hat Enterprise Linux 8 or 9 to confirm the current state, inspect the sysctl with the command:\n\n# cat /proc/sys/kernel/unprivileged_bpf_disabled\n\nThe setting of 1 would mean that unprivileged users cannot use eBPF, mitigating the flaw.\n\nA kernel update will be required to mitigate the flaw for the root or users with CAP_SYS_ADMIN capabilities.\n\nNote: A fix for this CVE may be backported as a part of one of the future BPF subsystem rebases."
        }
    ],
    "credits": [
        {
            "lang": "en",
            "value": "Red Hat would like to thank Hsin-Wei Hung (University of California, Irvine) for reporting this issue."
        }
    ],
    "impact": {
        "cvss": [
            {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 4.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
            }
        ]
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}