ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS_CVE-2026-23459

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS\n\nBlamed commits forgot that vxlan/geneve use udp_tunnel[6]_xmit_skb() which\ncall iptunnel_xmit_stats().\n\niptunnel_xmit_stats() was assuming tunnels were only using\nNETDEV_PCPU_STAT_TSTATS.\n\n@syncp offset in pcpu_sw_netstats and pcpu_dstats is different.\n\n32bit kernels would either have corruptions or freezes if the syncp\nsequence was overwritten.\n\nThis patch also moves pcpu_stat_type closer to dev->{t,d}stats to avoid\na potential cache line miss since iptunnel_xmit_stats() needs to read it.",
    "published": "2026-04-03T15:15:39.665Z",
    "modified": "2026-04-27T14:02:37.795Z",
    "type": "cve",
    "title": "ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1\nhttps://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132",
    "id": "CVE-2026-23459",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux be226352e8dc77d3313c096b2d8e7f69bf6980fc\nLinux Linux be226352e8dc77d3313c096b2d8e7f69bf6980fc\nLinux Linux 6.14",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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": "",
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            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "be226352e8dc77d3313c096b2d8e7f69bf6980fc",
    "vendor": "Linux",
    "ai_description": "",
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    "ai_score": 0
}