{"id":"CVE-2022-50542","summary":"media: si470x: Fix use-after-free in si470x_int_in_callback()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: si470x: Fix use-after-free in si470x_int_in_callback()\n\nsyzbot reported use-after-free in si470x_int_in_callback() [1].  This\nindicates that urb-\u003econtext, which contains struct si470x_device\nobject, is freed when si470x_int_in_callback() is called.\n\nThe cause of this issue is that si470x_int_in_callback() is called for\nfreed urb.\n\nsi470x_usb_driver_probe() calls si470x_start_usb(), which then calls\nusb_submit_urb() and si470x_start().  If si470x_start_usb() fails,\nsi470x_usb_driver_probe() doesn't kill urb, but it just frees struct\nsi470x_device object, as depicted below:\n\nsi470x_usb_driver_probe()\n  ...\n  si470x_start_usb()\n    ...\n    usb_submit_urb()\n    retval = si470x_start()\n    return retval\n  if (retval \u003c 0)\n    free struct si470x_device object, but don't kill urb\n\nThis patch fixes this issue by killing urb when si470x_start_usb()\nfails and urb is submitted.  If si470x_start_usb() fails and urb is\nnot submitted, i.e. submitting usb fails, it just frees struct\nsi470x_device object.","modified":"2026-04-02T08:28:36.202860Z","published":"2025-10-07T15:21:07.236Z","related":["SUSE-SU-2025:4111-1","SUSE-SU-2025:4139-1","SUSE-SU-2025:4149-1","SUSE-SU-2025:4189-1","SUSE-SU-2025:4320-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50542.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0ca298d548461d29615f9a2b1309e8dcf4a352c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/146bd005ebb01ae190c22af050cb98623958c373"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1c6447d0fc68650e51586dde79b5090d9d77f13a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/52f54fe78cca24850a30865037250f63eb3d5bf7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/63648a7bd1a7599bcc2040a6d1792363ae4c2e1b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d21e0b1b41b21d628bf2afce777727bd4479aa5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c6151b8e8dd2d98ad2cd725d26d1e103d989891"},{"type":"WEB","url":"https://git.kernel.org/stable/c/92b0888398e4ba51d93b618a6506781f4e3879c9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50542.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50542"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"779471110c6f0f7f7c223fc696170ec750ac3531"},{"fixed":"146bd005ebb01ae190c22af050cb98623958c373"},{"fixed":"8c6151b8e8dd2d98ad2cd725d26d1e103d989891"},{"fixed":"52f54fe78cca24850a30865037250f63eb3d5bf7"},{"fixed":"0ca298d548461d29615f9a2b1309e8dcf4a352c6"},{"fixed":"1c6447d0fc68650e51586dde79b5090d9d77f13a"},{"fixed":"6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75"},{"fixed":"63648a7bd1a7599bcc2040a6d1792363ae4c2e1b"},{"fixed":"92b0888398e4ba51d93b618a6506781f4e3879c9"},{"fixed":"7d21e0b1b41b21d628bf2afce777727bd4479aa5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50542.json"}}],"schema_version":"1.7.5"}