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{"bugzilla": {"description": "kernel: media: mxl111sf: change mutex_init() location", "id": "2293245", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293245"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: mxl111sf: change mutex_init() location\nSyzbot reported, that mxl111sf_ctrl_msg() uses uninitialized\nmutex. The problem was in wrong mutex_init() location.\nPrevious mutex_init(&state->msg_lock) call was in ->init() function, but\ndvb_usbv2_init() has this order of calls:\ndvb_usbv2_init()\ndvb_usbv2_adapter_init()\ndvb_usbv2_adapter_frontend_init()\nprops->frontend_attach()\nprops->init()\nSince mxl111sf_* devices call mxl111sf_ctrl_msg() in ->frontend_attach()\ninternally we need to initialize state->msg_lock before\nfrontend_attach(). To achieve it, ->probe() call added to all mxl111sf_*\ndevices, which will simply initiaize mutex."], "name": "CVE-2021-47583", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not 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": "2024-06-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47583\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47583\nhttps://lore.kernel.org/linux-cve-announce/2024061916-CVE-2021-47583-b02c@gregkh/T"], "threat_severity": "Low"}

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