CVE-2022-50714
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921e: fix rmmod crash in driver reload test In insmod/rmmod stress test, the following crash dump shows up immediately. The problem is caused by missing mt76_dev in mt7921_pci_remove(). We should make sure the drvdata is ready before probe() finished. [168.862789] ================================================================== [168.862797] BUG: KASAN: user-memory-access in try_to_grab_pending+0x59/0x480 [168.862805] Write of size 8 at addr 0000000000006df0 by task rmmod/5361 [168.862812] CPU: 7 PID: 5361 Comm: rmmod Tainted: G OE 5.19.0-rc6 #1 [168.862816] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, 05/04/2020 [168.862820] Call Trace: [168.862822] <TASK> [168.862825] dump_stack_lvl+0x49/0x63 [168.862832] print_report.cold+0x493/0x6b7 [168.862845] kasan_report+0xa7/0x120 [168.862857] kasan_check_range+0x163/0x200 [168.862861] __kasan_check_write+0x14/0x20 [168.862866] try_to_grab_pending+0x59/0x480 [168.862870] __cancel_work_timer+0xbb/0x340 [168.862898] cancel_work_sync+0x10/0x20 [168.862902] mt7921_pci_remove+0x61/0x1c0 [mt7921e] [168.862909] pci_device_remove+0xa3/0x1d0 [168.862914] device_remove+0xc4/0x170 [168.862920] device_release_driver_internal+0x163/0x300 [168.862925] driver_detach+0xc7/0x1a0 [168.862930] bus_remove_driver+0xeb/0x2d0 [168.862935] driver_unregister+0x71/0xb0 [168.862939] pci_unregister_driver+0x30/0x230 [168.862944] mt7921_pci_driver_exit+0x10/0x1b [mt7921e] [168.862949] __x64_sys_delete_module+0x2f9/0x4b0 [168.862968] do_syscall_64+0x38/0x90 [168.862973] entry_SYSCALL_64_after_hwframe+0x63/0xcd Test steps: 1. insmode 2. do not ifup 3. rmmod quickly (within 1 second)
Affected versions
Linux kernel versions
5.18
and later are affected. Fixed in
5.19.17,
6.0.3,
6.1
and their respective stable series.
References
The following references provide additional information about CVE-2022-50714 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/1034d8e08508830161377f136a060e78fc24f2a5
-
PatchKernel patch commithttps://git.kernel.org/stable/c/b5a62d612b7baf6e09884e4de94decb6391d6a9d
-
PatchKernel patch commithttps://git.kernel.org/stable/c/ccda3ebdae719d348f90563b6719fba4929ae283
Frequently asked questions
-
What is CVE-2022-50714?
CVE-2022-50714 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.18 onward and has been patched in 5.19.17, 6.0.3 and 6.1. CVE-2022-50714 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2022-50714?
Yes — CVE-2022-50714 has been patched. Fixed versions include 5.19.17, 6.0.3 and 6.1. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2022-50714 actively exploited?
No — CVE-2022-50714 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.