s390/bpf: Zero-extend bpf prog return values and kfunc arguments_CVE-2026-53110

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/bpf: Zero-extend bpf prog return values and kfunc arguments\n\ns390x ABI requires callers to zero-extend unsigned arguments and\nsign-extend signed arguments, and callees to zero-extend unsigned\nreturn values and sign-extend signed return values.\n\ns390 BPF JIT currently implements only sign extension. Fix this\nomission and implement zero extension too.",
    "published": "2026-06-24T16:30:44.036Z",
    "modified": "2026-06-28T06:39:20.484Z",
    "type": "cve",
    "title": "s390/bpf: Zero-extend bpf prog return values and kfunc arguments",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99\nhttps://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8\nhttps://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797\nhttps://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34\nhttps://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59",
    "id": "CVE-2026-53110",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 528eb2cb87bc1353235a6384696b4849bde8b0ba\nLinux Linux 528eb2cb87bc1353235a6384696b4849bde8b0ba\nLinux Linux 528eb2cb87bc1353235a6384696b4849bde8b0ba\nLinux Linux 528eb2cb87bc1353235a6384696b4849bde8b0ba\nLinux Linux 528eb2cb87bc1353235a6384696b4849bde8b0ba\nLinux Linux 6.3",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "528eb2cb87bc1353235a6384696b4849bde8b0ba",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}