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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: check for null after calling kmemdup\n\nkmemdup can return a null pointer so need to check for it, otherwise\nthe null key will be dereferenced later in tipc_crypto_key_xmit as\ncan be seen in the trace [1].\n\n\n[1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tipc: verifique si hay valores nulos despu\u00e9s de llamar a kmemdup kmemdup puede devolver un puntero nulo, por lo que es necesario verificarlo; de lo contrario, se eliminar\u00e1 la referencia a la clave nula m\u00e1s adelante en tipc_crypto_key_xmit, como se puede ver en el seguimiento. [1]. [1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58"}], "id": "CVE-2021-47186", "lastModified": "2025-02-21T17:15:10.273", "metrics": {}, "published": "2024-04-10T19:15:47.430", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: tipc: check for null after calling kmemdup", "id": "2274623", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2274623"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-690", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntipc: check for null after calling kmemdup\nkmemdup can return a null pointer so need to check for it, otherwise\nthe null key will be dereferenced later in tipc_crypto_key_xmit as\ncan be seen in the trace [1].\n[1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58"], "name": "CVE-2021-47186", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47186\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47186\nhttps://lore.kernel.org/linux-cve-announce/2024041033-CVE-2021-47186-7287@gregkh/T"], "threat_severity": "Low"}

{}