{"id":"CVE-2022-50542","state":"PUBLISHED","title":"media: si470x: Fix use-after-free in si470x_int_in_callback()","description":"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->context, 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 < 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.","publishedAt":"2025-10-07T15:21:07.236Z","updatedAt":"2026-05-11T19:21:26.403Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"146bd005ebb01ae190c22af050cb98623958c373","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"8c6151b8e8dd2d98ad2cd725d26d1e103d989891","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"52f54fe78cca24850a30865037250f63eb3d5bf7","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"0ca298d548461d29615f9a2b1309e8dcf4a352c6","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"1c6447d0fc68650e51586dde79b5090d9d77f13a","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"63648a7bd1a7599bcc2040a6d1792363ae4c2e1b","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"92b0888398e4ba51d93b618a6506781f4e3879c9","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"7d21e0b1b41b21d628bf2afce777727bd4479aa5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/radio/si470x/radio-si470x-usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.6","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/radio/si470x/radio-si470x-usb.c"]}],"references":["https://git.kernel.org/stable/c/146bd005ebb01ae190c22af050cb98623958c373","https://git.kernel.org/stable/c/8c6151b8e8dd2d98ad2cd725d26d1e103d989891","https://git.kernel.org/stable/c/52f54fe78cca24850a30865037250f63eb3d5bf7","https://git.kernel.org/stable/c/0ca298d548461d29615f9a2b1309e8dcf4a352c6","https://git.kernel.org/stable/c/1c6447d0fc68650e51586dde79b5090d9d77f13a","https://git.kernel.org/stable/c/6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75","https://git.kernel.org/stable/c/63648a7bd1a7599bcc2040a6d1792363ae4c2e1b","https://git.kernel.org/stable/c/92b0888398e4ba51d93b618a6506781f4e3879c9","https://git.kernel.org/stable/c/7d21e0b1b41b21d628bf2afce777727bd4479aa5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50542.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50542","state":"PUBLISHED","datePublished":"2025-10-07T15:21:07.236Z","dateUpdated":"2026-05-11T19:21:26.403Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-07T15:15:38.667Z"},"containers":{"cna":{"title":"media: si470x: Fix use-after-free in si470x_int_in_callback()","descriptions":[{"lang":"en","value":"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->context, 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 < 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"146bd005ebb01ae190c22af050cb98623958c373","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"8c6151b8e8dd2d98ad2cd725d26d1e103d989891","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"52f54fe78cca24850a30865037250f63eb3d5bf7","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"0ca298d548461d29615f9a2b1309e8dcf4a352c6","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"1c6447d0fc68650e51586dde79b5090d9d77f13a","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"63648a7bd1a7599bcc2040a6d1792363ae4c2e1b","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"92b0888398e4ba51d93b618a6506781f4e3879c9","versionType":"git"},{"version":"779471110c6f0f7f7c223fc696170ec750ac3531","status":"affected","lessThan":"7d21e0b1b41b21d628bf2afce777727bd4479aa5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/radio/si470x/radio-si470x-usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.6","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/radio/si470x/radio-si470x-usb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/146bd005ebb01ae190c22af050cb98623958c373"},{"url":"https://git.kernel.org/stable/c/8c6151b8e8dd2d98ad2cd725d26d1e103d989891"},{"url":"https://git.kernel.org/stable/c/52f54fe78cca24850a30865037250f63eb3d5bf7"},{"url":"https://git.kernel.org/stable/c/0ca298d548461d29615f9a2b1309e8dcf4a352c6"},{"url":"https://git.kernel.org/stable/c/1c6447d0fc68650e51586dde79b5090d9d77f13a"},{"url":"https://git.kernel.org/stable/c/6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75"},{"url":"https://git.kernel.org/stable/c/63648a7bd1a7599bcc2040a6d1792363ae4c2e1b"},{"url":"https://git.kernel.org/stable/c/92b0888398e4ba51d93b618a6506781f4e3879c9"},{"url":"https://git.kernel.org/stable/c/7d21e0b1b41b21d628bf2afce777727bd4479aa5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:21:26.403Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"4.9.337"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"4.14.303"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"4.19.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}