CVE-2022-48826
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48826
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48826.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-48826
- Downstream
- Related
- Published
- 2024-07-16T11:44:11Z
- Modified
- 2025-10-21T09:00:55.069668Z
- Summary
- drm/vc4: Fix deadlock on DSI device attach error
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/vc4: Fix deadlock on DSI device attach error
DSI device attach to DSI host will be done with host device's lock held.
Un-registering host in "device attach" error path (ex: probe retry) will result in deadlock with below call trace and non operational DSI display.
Startup Call trace: [ 35.043036] rtmutexslowlock.constprop.21+0x184/0x1b8 [ 35.043048] mutexlocknested+0x7c/0xc8 [ 35.043060] devicedel+0x4c/0x3e8 [ 35.043075] deviceunregister+0x20/0x40 [ 35.043082] mipidsiremovedevicefn+0x18/0x28 [ 35.043093] deviceforeachchild+0x68/0xb0 [ 35.043105] mipidsihostunregister+0x40/0x90 [ 35.043115] vc4dsihostattach+0xf0/0x120 [vc4] [ 35.043199] mipidsiattach+0x30/0x48 [ 35.043209] tc358762probe+0x128/0x164 [tc358762] [ 35.043225] mipidsidrvprobe+0x28/0x38 [ 35.043234] reallyprobe+0xc0/0x318 [ 35.043244] _driverprobedevice+0x80/0xe8 [ 35.043254] driverprobedevice+0xb8/0x118 [ 35.043263] _deviceattachdriver+0x98/0xe8 [ 35.043273] busforeachdrv+0x84/0xd8 [ 35.043281] _deviceattach+0xf0/0x150 [ 35.043290] deviceinitialprobe+0x1c/0x28 [ 35.043300] busprobedevice+0xa4/0xb0 [ 35.043308] deferredprobeworkfunc+0xa0/0xe0 [ 35.043318] processonework+0x254/0x700 [ 35.043330] workerthread+0x4c/0x448 [ 35.043339] kthread+0x19c/0x1a8 [ 35.043348] retfrom_fork+0x10/0x20
Shutdown Call trace: [ 365.565417] Call trace: [ 365.565423] _switchto+0x148/0x200 [ 365.565452] _schedule+0x340/0x9c8 [ 365.565467] schedule+0x48/0x110 [ 365.565479] scheduletimeout+0x3b0/0x448 [ 365.565496] waitforcompletion+0xac/0x138 [ 365.565509] _flushwork+0x218/0x4e0 [ 365.565523] flushwork+0x1c/0x28 [ 365.565536] waitfordeviceprobe+0x68/0x158 [ 365.565550] deviceshutdown+0x24/0x348 [ 365.565561] kernelrestartprepare+0x40/0x50 [ 365.565578] kernelrestart+0x20/0x70 [ 365.565591] _dosysreboot+0x10c/0x220 [ 365.565605] _arm64sysreboot+0x2c/0x38 [ 365.565619] invokesyscall+0x4c/0x110 [ 365.565634] el0svccommon.constprop.3+0xfc/0x120 [ 365.565648] doel0svc+0x2c/0x90 [ 365.565661] el0svc+0x4c/0xf0 [ 365.565671] el0t64synchandler+0x90/0xb8 [ 365.565682] el0t64_sync+0x180/0x184
- References
Affected packages
Git / 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
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed770d1ba9a8201ce9bee0946eb03746449b6f3b80
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixeddddd832f35096fbc5004e3a7e58fb4d2cefb8deb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed0a3d12ab5097b1d045e693412e6b366b7e82031b