CVE-2025-68306
- Published: 2025-12-16T16:16:10.137
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btusb: mediatek: Fix kernel crash when releasing mtk iso interface
When performing reset tests and encountering abnormal card drop issues
that lead to a kernel crash, it is necessary to perform a null check
before releasing resources to avoid attempting to release a null pointer.
[ 29.158070] Hardware name: Google Quigon sku196612/196613 board (DT)
[ 29.158076] Workqueue: hci0 hci_cmd_sync_work [bluetooth]
[ 29.158154] pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=–)
[ 29.158162] pc : klist_remove+0x90/0x158
[ 29.158174] lr : klist_remove+0x88/0x158
[ 29.158180] sp : ffffffc0846b3c00
[ 29.158185] pmr_save: 000000e0
[ 29.158188] x29: ffffffc0846b3c30 x28: ffffff80cd31f880 x27: ffffff80c1bdc058
[ 29.158199] x26: dead000000000100 x25: ffffffdbdc624ea3 x24: ffffff80c1bdc4c0
[ 29.158209] x23: ffffffdbdc62a3e6 x22: ffffff80c6c07000 x21: ffffffdbdc829290
[ 29.158219] x20: 0000000000000000 x19: ffffff80cd3e0648 x18: 000000031ec97781
[ 29.158229] x17: ffffff80c1bdc4a8 x16: ffffffdc10576548 x15: ffffff80c1180428
[ 29.158238] x14: 0000000000000000 x13: 000000000000e380 x12: 0000000000000018
[ 29.158248] x11: ffffff80c2a7fd10 x10: 0000000000000000 x9 : 0000000100000000
[ 29.158257] x8 : 0000000000000000 x7 : 7f7f7f7f7f7f7f7f x6 : 2d7223ff6364626d
[ 29.158266] x5 : 0000008000000000 x4 : 0000000000000020 x3 : 2e7325006465636e
[ 29.158275] x2 : ffffffdc11afeff8 x1 : 0000000000000000 x0 : ffffffdc11be4d0c
[ 29.158285] Call trace:
[ 29.158290] klist_remove+0x90/0x158
[ 29.158298] device_release_driver_internal+0x20c/0x268
[ 29.158308] device_release_driver+0x1c/0x30
[ 29.158316] usb_driver_release_interface+0x70/0x88
[ 29.158325] btusb_mtk_release_iso_intf+0x68/0xd8 [btusb (HASH:e8b6 5)]
[ 29.158347] btusb_mtk_reset+0x5c/0x480 [btusb (HASH:e8b6 5)]
[ 29.158361] hci_cmd_sync_work+0x10c/0x188 [bluetooth (HASH:a4fa 6)]
[ 29.158430] process_scheduled_works+0x258/0x4e8
[ 29.158441] worker_thread+0x300/0x428
[ 29.158448] kthread+0x108/0x1d0
[ 29.158455] ret_from_fork+0x10/0x20
[ 29.158467] Code: 91343000 940139d1 f9400268 927ff914 (f9401297)
[ 29.158474] —[ end trace 0000000000000000 ]—
[ 29.167129] Kernel panic – not syncing: Oops: Fatal exception
[ 29.167144] SMP: stopping secondary CPUs
[ 29.167158] ————[ cut here ]————
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How to fix CVE-2025-68306
Description: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: mediatek: Fix kernel crash when releasing mtk iso interface When performing reset tests and encountering abnormal card drop issues that lead to a kernel crash, it is necessary to perform a null check before releasing resources to avoid attempting to release a null […]
Exploit Difficulty: HARD
⏱️ Time to exploit: > 4 hours
🛠️ Required skills: Advanced security expertise
💰 Public exploits: Rare or not public
How to Fix:
- Check if you're running the affected product
- Update to the latest patched version
- If patching is not immediately possible: restrict network exposure, apply least-privilege access
- Test the fix in a staging environment first
- Review logs for signs of exploitation
- Monitor for IOCs (Indicators of Compromise)
- Enable automatic security updates
- Set up vulnerability monitoring
- Review and harden security configurations
Exploit Difficulty Assessment
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