misc: fastrpc: possible double-free of cctx->remote_heap_CVE-2026-31730

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: possible double-free of cctx->remote_heap\n\nfastrpc_init_create_static_process() may free cctx->remote_heap on the\nerr_map path but does not clear the pointer. Later, fastrpc_rpmsg_remove()\nfrees cctx->remote_heap again if it is non-NULL, which can lead to a\ndouble-free if the INIT_CREATE_STATIC ioctl hits the error path and the rpmsg\ndevice is subsequently removed/unbound.\nClear cctx->remote_heap after freeing it in the error path to prevent the\nlater cleanup from freeing it again.\n\nThis issue was found by an in-house analysis workflow that extracts AST-based\ninformation and runs static checks, with LLM assistance for triage, and was\nconfirmed by manual code review.\nNo hardware testing was performed.",
    "published": "2026-05-01T14:14:29.522Z",
    "modified": "2026-05-08T12:40:12.536Z",
    "type": "cve",
    "title": "misc: fastrpc: possible double-free of cctx->remote_heap",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/4b8e527aca357a6488680713bd88007cf8f547fe\nhttps://git.kernel.org/stable/c/0bdee4118340c5a756220c1b29a7dab86bb0aa65\nhttps://git.kernel.org/stable/c/3a164f640953cc982804746e772d379171aff5c6\nhttps://git.kernel.org/stable/c/f67d368d26764a357691b2b3a33d3cb55b435bfc\nhttps://git.kernel.org/stable/c/ba2c83167b215da30fa2aae56b140198cf8d8408",
    "id": "CVE-2026-31730",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 0871561055e666da421d779397efcc1e5e964cab\nLinux Linux 0871561055e666da421d779397efcc1e5e964cab\nLinux Linux 0871561055e666da421d779397efcc1e5e964cab\nLinux Linux 0871561055e666da421d779397efcc1e5e964cab\nLinux Linux 0871561055e666da421d779397efcc1e5e964cab\nLinux Linux 6.2",
    "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": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "0871561055e666da421d779397efcc1e5e964cab",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}