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    "cveMetadata": {
        "cveId": "CVE-2021-47218",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-04-10T18:59:19.528Z",
        "datePublished": "2024-04-10T19:01:57.060Z",
        "dateUpdated": "2024-08-04T05:32:07.363Z"
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                "dateUpdated": "2024-05-29T05:04:06.065Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: fix NULL-pointer dereference when hashtab allocation fails\n\nWhen the hash table slot array allocation fails in hashtab_init(),\nh->size is left initialized with a non-zero value, but the h->htable\npointer is NULL. This may then cause a NULL pointer dereference, since\nthe policydb code relies on the assumption that even after a failed\nhashtab_init(), hashtab_map() and hashtab_destroy() can be safely called\non it. Yet, these detect an empty hashtab only by looking at the size.\n\nFix this by making sure that hashtab_init() always leaves behind a valid\nempty hashtab when the allocation fails."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "security/selinux/ss/hashtab.c"
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                            "version": "03414a49ad5f",
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                    "programFiles": [
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                            "version": "5.8",
                            "status": "affected"
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                        {
                            "version": "0",
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                            "status": "unaffected",
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                        },
                        {
                            "version": "5.10.82",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.5",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b17dd53cac769dd13031b0ca34f90cc65e523fab"
                },
                {
                    "url": "https://git.kernel.org/stable/c/83c8ab8503adf56bf68dafc7a382f4946c87da79"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc27f3c5d10c58069672215787a96b4fae01818b"
                }
            ],
            "title": "selinux: fix NULL-pointer dereference when hashtab allocation fails",
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        },
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                                "timestamp": "2024-04-15T15:01:50.328604Z",
                                "id": "CVE-2021-47218",
                                "options": [
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                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "no"
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                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
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                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/b17dd53cac769dd13031b0ca34f90cc65e523fab",
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