{"id":"CVE-2022-50714","state":"PUBLISHED","title":"wifi: mt76: mt7921e: fix rmmod crash in driver reload test","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921e: fix rmmod crash in driver reload test\n\nIn insmod/rmmod stress test, the following crash dump shows up immediately.\nThe problem is caused by missing mt76_dev in mt7921_pci_remove(). We\nshould make sure the drvdata is ready before probe() finished.\n\n[168.862789] ==================================================================\n[168.862797] BUG: KASAN: user-memory-access in try_to_grab_pending+0x59/0x480\n[168.862805] Write of size 8 at addr 0000000000006df0 by task rmmod/5361\n[168.862812] CPU: 7 PID: 5361 Comm: rmmod Tainted: G           OE     5.19.0-rc6 #1\n[168.862816] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, 05/04/2020\n[168.862820] Call Trace:\n[168.862822]  <TASK>\n[168.862825]  dump_stack_lvl+0x49/0x63\n[168.862832]  print_report.cold+0x493/0x6b7\n[168.862845]  kasan_report+0xa7/0x120\n[168.862857]  kasan_check_range+0x163/0x200\n[168.862861]  __kasan_check_write+0x14/0x20\n[168.862866]  try_to_grab_pending+0x59/0x480\n[168.862870]  __cancel_work_timer+0xbb/0x340\n[168.862898]  cancel_work_sync+0x10/0x20\n[168.862902]  mt7921_pci_remove+0x61/0x1c0 [mt7921e]\n[168.862909]  pci_device_remove+0xa3/0x1d0\n[168.862914]  device_remove+0xc4/0x170\n[168.862920]  device_release_driver_internal+0x163/0x300\n[168.862925]  driver_detach+0xc7/0x1a0\n[168.862930]  bus_remove_driver+0xeb/0x2d0\n[168.862935]  driver_unregister+0x71/0xb0\n[168.862939]  pci_unregister_driver+0x30/0x230\n[168.862944]  mt7921_pci_driver_exit+0x10/0x1b [mt7921e]\n[168.862949]  __x64_sys_delete_module+0x2f9/0x4b0\n[168.862968]  do_syscall_64+0x38/0x90\n[168.862973]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nTest steps:\n1. insmode\n2. do not ifup\n3. rmmod quickly (within 1 second)","publishedAt":"2025-12-24T12:22:39.059Z","updatedAt":"2026-05-11T19:24:05.961Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1c71e03afe4b457a15e50de40006b927dfc00755","status":"affected","lessThan":"1034d8e08508830161377f136a060e78fc24f2a5","versionType":"git"},{"version":"1c71e03afe4b457a15e50de40006b927dfc00755","status":"affected","lessThan":"ccda3ebdae719d348f90563b6719fba4929ae283","versionType":"git"},{"version":"1c71e03afe4b457a15e50de40006b927dfc00755","status":"affected","lessThan":"b5a62d612b7baf6e09884e4de94decb6391d6a9d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"5.19.17","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/pci.c"]}],"references":["https://git.kernel.org/stable/c/1034d8e08508830161377f136a060e78fc24f2a5","https://git.kernel.org/stable/c/ccda3ebdae719d348f90563b6719fba4929ae283","https://git.kernel.org/stable/c/b5a62d612b7baf6e09884e4de94decb6391d6a9d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50714.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50714","state":"PUBLISHED","datePublished":"2025-12-24T12:22:39.059Z","dateUpdated":"2026-05-11T19:24:05.961Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T12:20:40.329Z"},"containers":{"cna":{"title":"wifi: mt76: mt7921e: fix rmmod crash in driver reload test","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921e: fix rmmod crash in driver reload test\n\nIn insmod/rmmod stress test, the following crash dump shows up immediately.\nThe problem is caused by missing mt76_dev in mt7921_pci_remove(). We\nshould make sure the drvdata is ready before probe() finished.\n\n[168.862789] ==================================================================\n[168.862797] BUG: KASAN: user-memory-access in try_to_grab_pending+0x59/0x480\n[168.862805] Write of size 8 at addr 0000000000006df0 by task rmmod/5361\n[168.862812] CPU: 7 PID: 5361 Comm: rmmod Tainted: G           OE     5.19.0-rc6 #1\n[168.862816] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, 05/04/2020\n[168.862820] Call Trace:\n[168.862822]  <TASK>\n[168.862825]  dump_stack_lvl+0x49/0x63\n[168.862832]  print_report.cold+0x493/0x6b7\n[168.862845]  kasan_report+0xa7/0x120\n[168.862857]  kasan_check_range+0x163/0x200\n[168.862861]  __kasan_check_write+0x14/0x20\n[168.862866]  try_to_grab_pending+0x59/0x480\n[168.862870]  __cancel_work_timer+0xbb/0x340\n[168.862898]  cancel_work_sync+0x10/0x20\n[168.862902]  mt7921_pci_remove+0x61/0x1c0 [mt7921e]\n[168.862909]  pci_device_remove+0xa3/0x1d0\n[168.862914]  device_remove+0xc4/0x170\n[168.862920]  device_release_driver_internal+0x163/0x300\n[168.862925]  driver_detach+0xc7/0x1a0\n[168.862930]  bus_remove_driver+0xeb/0x2d0\n[168.862935]  driver_unregister+0x71/0xb0\n[168.862939]  pci_unregister_driver+0x30/0x230\n[168.862944]  mt7921_pci_driver_exit+0x10/0x1b [mt7921e]\n[168.862949]  __x64_sys_delete_module+0x2f9/0x4b0\n[168.862968]  do_syscall_64+0x38/0x90\n[168.862973]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nTest steps:\n1. insmode\n2. do not ifup\n3. rmmod quickly (within 1 second)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1c71e03afe4b457a15e50de40006b927dfc00755","status":"affected","lessThan":"1034d8e08508830161377f136a060e78fc24f2a5","versionType":"git"},{"version":"1c71e03afe4b457a15e50de40006b927dfc00755","status":"affected","lessThan":"ccda3ebdae719d348f90563b6719fba4929ae283","versionType":"git"},{"version":"1c71e03afe4b457a15e50de40006b927dfc00755","status":"affected","lessThan":"b5a62d612b7baf6e09884e4de94decb6391d6a9d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"5.19.17","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/pci.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1034d8e08508830161377f136a060e78fc24f2a5"},{"url":"https://git.kernel.org/stable/c/ccda3ebdae719d348f90563b6719fba4929ae283"},{"url":"https://git.kernel.org/stable/c/b5a62d612b7baf6e09884e4de94decb6391d6a9d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:24:05.961Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"5.19.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.0.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}