netfilter: conntrack: remove sprintf usage_CVE-2026-53002

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: remove sprintf usage\n\nReplace it with scnprintf, the buffer sizes are expected to be large enough\nto hold the result, no need for snprintf+overflow check.\n\nIncrease buffer size in mangle_content_len() while at it.\n\nBUG: KASAN: stack-out-of-bounds in vsnprintf+0xea5/0x1270\nWrite of size 1 at addr [..]\n vsnprintf+0xea5/0x1270\n sprintf+0xb1/0xe0\n mangle_content_len+0x1ac/0x280\n nf_nat_sdp_session+0x1cc/0x240\n process_sdp+0x8f8/0xb80\n process_invite_request+0x108/0x2b0\n process_sip_msg+0x5da/0xf50\n sip_help_tcp+0x45e/0x780\n nf_confirm+0x34d/0x990\n [..]",
    "published": "2026-06-24T16:29:14.391Z",
    "modified": "2026-06-28T06:37:52.650Z",
    "type": "cve",
    "title": "netfilter: conntrack: remove sprintf usage",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/2f793ba78470a99f40389b7dc60a81d9f5ad3956\nhttps://git.kernel.org/stable/c/6bbf829b4c1b44c941c47dd0d710f1393258f3d5\nhttps://git.kernel.org/stable/c/ab64e61c9323fa6de21bd20da1ddb29a0fb65d34\nhttps://git.kernel.org/stable/c/1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1e\nhttps://git.kernel.org/stable/c/a8e0a32a23d3f34862af3b4da792ecb3a891a9a3\nhttps://git.kernel.org/stable/c/8e3be0d12615a173fe260cd42753ca7a001acbf2\nhttps://git.kernel.org/stable/c/c08ff52e44945e6ef4ce0790f49ea761b060c45b\nhttps://git.kernel.org/stable/c/6e7066bdb481a87fe88c4fa563e348c03b2d373d",
    "id": "CVE-2026-53002",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 9fafcd7b203229c3f3893a475741afc27e276306\nLinux Linux 2.6.20",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/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": "",
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            "privilegesRequired": "",
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            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "9fafcd7b203229c3f3893a475741afc27e276306",
    "vendor": "Linux",
    "ai_description": "Stack-based buffer overflow vulnerability in the Linux kernel's netfilter subsystem",
    "ai_severity": "Critical",
    "ai_vendor": "Linux",
    "ai_product": "Linux Kernel",
    "ai_version": "2.6.20, 9fafcd7b203229c3f3893a475741afc27e276306",
    "ai_score": 9.8
}