ice: fix double-free of tx_buf skb_CVE-2026-53009

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix double-free of tx_buf skb\n\nIf ice_tso() or ice_tx_csum() fail, the error path in\nice_xmit_frame_ring() frees the skb, but the 'first' tx_buf still points\nto it and is marked as valid (ICE_TX_BUF_SKB).\n'next_to_use' remains unchanged, so the potential problem will\nlikely fix itself when the next packet is transmitted and the tx_buf\ngets overwritten. But if there is no next packet and the interface is\nbrought down instead, ice_clean_tx_ring() -> ice_unmap_and_free_tx_buf()\nwill find the tx_buf and free the skb for the second time.\n\nThe fix is to reset the tx_buf type to ICE_TX_BUF_EMPTY in the error\npath, so that ice_unmap_and_free_tx_buf().\nMove the initialization of 'first' up, to ensure it's already valid in\ncase we hit the linearization error path.\n\nThe bug was spotted by AI while I had it looking for something else.\nIt also proposed an initial version of the patch.\n\nI reproduced the bug and tested the fix by adding code to inject\nfailures, on a build with KASAN.\n\nI looked for similar bugs in related Intel drivers and did not find any.",
    "published": "2026-06-24T16:29:20.332Z",
    "modified": "2026-06-28T06:37:58.894Z",
    "type": "cve",
    "title": "ice: fix double-free of tx_buf skb",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/4c08fc2119ef0281cfa2cee007acf0a251be55f2\nhttps://git.kernel.org/stable/c/1a303baa715e6b78d6a406aaf335f87ff35acfcd",
    "id": "CVE-2026-53009",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux d76a60ba7afb89523c88cf2ed3a044ce4180289e\nLinux Linux d76a60ba7afb89523c88cf2ed3a044ce4180289e\nLinux Linux 4.17",
    "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": {
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        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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            "privilegesRequired": "",
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "d76a60ba7afb89523c88cf2ed3a044ce4180289e",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}