CVE-2024-38664
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-38664
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38664.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-38664
- Downstream
- Related
- Published
- 2024-06-24T14:15:12Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm: zynqmp_dpsub: Always register bridge
We must always register the DRM bridge, since zynqmpdphpdworkfunc calls drmbridgehpdnotify, which in turn expects hpdmutex to be initialized. We do this before zynqmpdpsubdrminit since that calls drmbridge_attach. This fixes the following lockdep warning:
[ 19.217084] ------------[ cut here ]------------ [ 19.227530] DEBUGLOCKSWARNON(lock->magic != lock) [ 19.227768] WARNING: CPU: 0 PID: 140 at kernel/locking/mutex.c:582 _mutexlock+0x4bc/0x550 [ 19.241696] Modules linked in: [ 19.244937] CPU: 0 PID: 140 Comm: kworker/0:4 Not tainted 6.6.20+ #96 [ 19.252046] Hardware name: xlnx,zynqmp (DT) [ 19.256421] Workqueue: events zynqmpdphpdworkfunc [ 19.261795] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 19.269104] pc : _mutexlock+0x4bc/0x550 [ 19.273364] lr : _mutexlock+0x4bc/0x550 [ 19.277592] sp : ffffffc085c5bbe0 [ 19.281066] x29: ffffffc085c5bbe0 x28: 0000000000000000 x27: ffffff88009417f8 [ 19.288624] x26: ffffff8800941788 x25: ffffff8800020008 x24: ffffffc082aa3000 [ 19.296227] x23: ffffffc080d90e3c x22: 0000000000000002 x21: 0000000000000000 [ 19.303744] x20: 0000000000000000 x19: ffffff88002f5210 x18: 0000000000000000 [ 19.311295] x17: 6c707369642e3030 x16: 3030613464662072 x15: 0720072007200720 [ 19.318922] x14: 0000000000000000 x13: 284e4f5f4e524157 x12: 0000000000000001 [ 19.326442] x11: 0001ffc085c5b940 x10: 0001ff88003f388b x9 : 0001ff88003f3888 [ 19.334003] x8 : 0001ff88003f3888 x7 : 0000000000000000 x6 : 0000000000000000 [ 19.341537] x5 : 0000000000000000 x4 : 0000000000001668 x3 : 0000000000000000 [ 19.349054] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffff88003f3880 [ 19.356581] Call trace: [ 19.359160] _mutexlock+0x4bc/0x550 [ 19.363032] mutexlocknested+0x24/0x30 [ 19.367187] drmbridgehpdnotify+0x2c/0x6c [ 19.371698] zynqmpdphpdworkfunc+0x44/0x54 [ 19.376364] processonework+0x3ac/0x988 [ 19.380660] workerthread+0x398/0x694 [ 19.384736] kthread+0x1bc/0x1c0 [ 19.388241] retfromfork+0x10/0x20 [ 19.392031] irq event stamp: 183 [ 19.395450] hardirqs last enabled at (183): [<ffffffc0800b9278>] finishtaskswitch.isra.0+0xa8/0x2d4 [ 19.405140] hardirqs last disabled at (182): [<ffffffc081ad3754>] _schedule+0x714/0xd04 [ 19.413612] softirqs last enabled at (114): [<ffffffc080133de8>] srcuinvokecallbacks+0x158/0x23c [ 19.423128] softirqs last disabled at (110): [<ffffffc080133de8>] srcuinvokecallbacks+0x158/0x23c [ 19.432614] ---[ end trace 0000000000000000 ]---
(cherry picked from commit 61ba791c4a7a09a370c45b70a81b8c7d4cf6b2ae)
- References