smb/client: fix out-of-bounds read in smb2_compound_op()_CVE-2026-46155

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: fix out-of-bounds read in smb2_compound_op()\n\nIf a server sends a truncated response but a large OutputBufferLength, and\nterminates the EA list early, check_wsl_eas() returns success without\nvalidating that the entire OutputBufferLength fits within iov_len.\n\nThen smb2_compound_op() does:\n    memcpy(idata->wsl.eas, data[0], size[0]);\n\nWhere size[0] is OutputBufferLength. If iov_len is smaller than size[0],\nmemcpy can read beyond the end of the rsp_iov allocation and leak adjacent\nkernel heap memory.",
    "published": "2026-05-28T09:36:11.092Z",
    "modified": "2026-05-30T10:48:28.191Z",
    "type": "cve",
    "title": "smb/client: fix out-of-bounds read in smb2_compound_op()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/dffb44b2e06a2908e249f0f93156fc987eee1d1c\nhttps://git.kernel.org/stable/c/9b3af35645ff9cd334edc130249f9a2fb2bea25f\nhttps://git.kernel.org/stable/c/512d33bc8ea4ea5c19728ee118715f4b1f4d1926\nhttps://git.kernel.org/stable/c/a16f70a71be4b5a4eccf39a9bf09b47285f4cb7c\nhttps://git.kernel.org/stable/c/8d09328dfda089675e4c049f3f256064a1d1996b",
    "id": "CVE-2026-46155",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 7449d736bbbd160c76b01b8fcdf72f58a8757d4b\nLinux Linux ea41367b2a602f602ea6594fc4a310520dcc64f4\nLinux Linux ea41367b2a602f602ea6594fc4a310520dcc64f4\nLinux Linux ea41367b2a602f602ea6594fc4a310520dcc64f4\nLinux Linux ea41367b2a602f602ea6594fc4a310520dcc64f4\nLinux Linux 6.6.32\nLinux Linux 6.9",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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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            "confidentialityImpact": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "7449d736bbbd160c76b01b8fcdf72f58a8757d4b",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}