CVE-2021-3612

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This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."}, {"lang": "es", "value": "Se ha encontrado un fallo de escritura en memoria fuera de l\u00edmites en el kernel de Linux joystick devices subsystem en versiones anteriores a 5.9-rc1, en la manera en que el usuario llama a la ioctl JSIOCSBTNMAP. Este fallo permite a un usuario local bloquear el sistema o posiblemente escalar sus privilegios en el sistema. 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{"acknowledgement": "Red Hat would like to thank Murray McAllister for reporting this issue.", "affected_release": [{"advisory": "RHSA-2022:1975", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-372.9.1.rt7.166.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}, {"advisory": "RHSA-2022:1988", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-372.9.1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP()", "id": "1974079", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1974079"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-20->CWE-119", "details": ["An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.", "An out-of-bounds memory write flaw was found in the Linux kernel\u2019s joystick devices subsystem, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent the module joydev from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2021-3612", "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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-06-20T12:28:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3612\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3612\nhttps://lore.kernel.org/linux-input/20210620120030.1513655-1-avlarkin82@gmail.com/"], "statement": "This flaw is rated as having a Moderate impact because for the Red Hat Enterprise Linux the patch that made it possible writing memory out of bounds not applied yet, but still before that patch possible read out of bounds. Both in the default configuration of Red Hat Enterprise Linux the joysticks devices driver is disabled, so only privileged local user can enable it.", "threat_severity": "Moderate"}

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