{"id":"DEBIAN-CVE-2024-38664","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 zynqmp_dp_hpd_work_func calls drm_bridge_hpd_notify, which in turn expects hpd_mutex to be initialized. We do this before zynqmp_dpsub_drm_init since that calls drm_bridge_attach. This fixes the following lockdep warning:  [   19.217084] ------------[ cut here ]------------ [   19.227530] DEBUG_LOCKS_WARN_ON(lock-\u003emagic != lock) [   19.227768] WARNING: CPU: 0 PID: 140 at kernel/locking/mutex.c:582 __mutex_lock+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 zynqmp_dp_hpd_work_func [   19.261795] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [   19.269104] pc : __mutex_lock+0x4bc/0x550 [   19.273364] lr : __mutex_lock+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]  __mutex_lock+0x4bc/0x550 [   19.363032]  mutex_lock_nested+0x24/0x30 [   19.367187]  drm_bridge_hpd_notify+0x2c/0x6c [   19.371698]  zynqmp_dp_hpd_work_func+0x44/0x54 [   19.376364]  process_one_work+0x3ac/0x988 [   19.380660]  worker_thread+0x398/0x694 [   19.384736]  kthread+0x1bc/0x1c0 [   19.388241]  ret_from_fork+0x10/0x20 [   19.392031] irq event stamp: 183 [   19.395450] hardirqs last  enabled at (183): [\u003cffffffc0800b9278\u003e] finish_task_switch.isra.0+0xa8/0x2d4 [   19.405140] hardirqs last disabled at (182): [\u003cffffffc081ad3754\u003e] __schedule+0x714/0xd04 [   19.413612] softirqs last  enabled at (114): [\u003cffffffc080133de8\u003e] srcu_invoke_callbacks+0x158/0x23c [   19.423128] softirqs last disabled at (110): [\u003cffffffc080133de8\u003e] srcu_invoke_callbacks+0x158/0x23c [   19.432614] ---[ end trace 0000000000000000 ]---  (cherry picked from commit 61ba791c4a7a09a370c45b70a81b8c7d4cf6b2ae)","modified":"2026-09-15T09:02:57.289675373Z","published":"2024-06-24T14:15:12.707Z","upstream":["CVE-2024-38664"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-38664"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-38664.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-38664.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}