{"id":"DEBIAN-CVE-2021-47583","details":"In the Linux kernel, the following vulnerability has been resolved:  media: mxl111sf: change mutex_init() location  Syzbot reported, that mxl111sf_ctrl_msg() uses uninitialized mutex. The problem was in wrong mutex_init() location.  Previous mutex_init(&state-\u003emsg_lock) call was in -\u003einit() function, but dvb_usbv2_init() has this order of calls:  \tdvb_usbv2_init() \t  dvb_usbv2_adapter_init() \t    dvb_usbv2_adapter_frontend_init() \t      props-\u003efrontend_attach()  \t  props-\u003einit()  Since mxl111sf_* devices call mxl111sf_ctrl_msg() in -\u003efrontend_attach() internally we need to initialize state-\u003emsg_lock before frontend_attach(). To achieve it, -\u003eprobe() call added to all mxl111sf_* devices, which will simply initiaize mutex.","modified":"2026-09-01T20:04:38.210266958Z","published":"2024-06-19T15:15:52.843Z","upstream":["CVE-2021-47583"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-47583"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47583.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47583.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47583.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}