{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47012",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-27T18:42:55.953Z",
        "datePublished": "2024-02-28T08:13:30.284Z",
        "dateUpdated": "2024-08-04T05:24:39.841Z"
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                "dateUpdated": "2024-05-29T05:00:30.860Z"
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                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix a use after free in siw_alloc_mr\n\nOur code analyzer reported a UAF.\n\nIn siw_alloc_mr(), it calls siw_mr_add_mem(mr,..). In the implementation of\nsiw_mr_add_mem(), mem is assigned to mr->mem and then mem is freed via\nkfree(mem) if xa_alloc_cyclic() failed. Here, mr->mem still point to a\nfreed object. After, the execution continue up to the err_out branch of\nsiw_alloc_mr, and the freed mr->mem is used in siw_mr_drop_mem(mr).\n\nMy patch moves \"mr->mem = mem\" behind the if (xa_alloc_cyclic(..)<0) {}\nsection, to avoid the uaf."
                }
            ],
            "affected": [
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                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/infiniband/sw/siw/siw_mem.c"
                    ],
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                            "version": "2251334dcac9",
                            "lessThan": "30b9e92d0b5e",
                            "status": "affected",
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                    "programFiles": [
                        "drivers/infiniband/sw/siw/siw_mem.c"
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                            "status": "affected"
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                        {
                            "version": "5.10.37",
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                        {
                            "version": "5.11.21",
                            "lessThanOrEqual": "5.11.*",
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                            "version": "5.12.4",
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                            "version": "5.13",
                            "lessThanOrEqual": "*",
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                            "versionType": "original_commit_for_fix"
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                    "url": "https://git.kernel.org/stable/c/30b9e92d0b5e5d5dc1101ab856c17009537cbca4"
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                },
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                    "url": "https://git.kernel.org/stable/c/ad9ce7188432650469a6c7625bf479f5ed0b6155"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3093ee182f01689b89e9f8797b321603e5de4f63"
                }
            ],
            "title": "RDMA/siw: Fix a use after free in siw_alloc_mr",
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                                "id": "CVE-2021-47012",
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                                "options": [
                                    {
                                        "Exploitation": "none"
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                                        "Technical Impact": "partial"
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                                "version": "2.0.3",
                                "timestamp": "2024-02-28T20:34:17.324799Z"
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                "title": "CVE Program Container",
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