net-shapers: don’t free reply skb after genlmsg_reply()_CVE-2026-43481

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet-shapers: don't free reply skb after genlmsg_reply()\n\ngenlmsg_reply() hands the reply skb to netlink, and\nnetlink_unicast() consumes it on all return paths, whether the\nskb is queued successfully or freed on an error path.\n\nnet_shaper_nl_get_doit() and net_shaper_nl_cap_get_doit()\ncurrently jump to free_msg after genlmsg_reply() fails and call\nnlmsg_free(msg), which can hit the same skb twice.\n\nReturn the genlmsg_reply() error directly and keep free_msg\nonly for pre-reply failures.",
    "published": "2026-05-13T15:08:29.116Z",
    "modified": "2026-05-20T16:08:09.154Z",
    "type": "cve",
    "title": "net-shapers: don't free reply skb after genlmsg_reply()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/8738dcc844fff7d0157ee775230e95df3b1884d7\nhttps://git.kernel.org/stable/c/83f7b54242d0abbfce35a55c01322f50962ed3ee\nhttps://git.kernel.org/stable/c/57885276cc16a2e2b76282c808a4e84cbecb3aae",
    "id": "CVE-2026-43481",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb\nLinux Linux 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb\nLinux Linux 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb\nLinux Linux 6.13",
    "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": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "4b623f9f0f59652ea71fcb27d60b4c3b65126dbb",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}