{"id":"CVE-2023-52477","summary":"usb: hub: Guard against accesses to uninitialized BOS descriptors","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: hub: Guard against accesses to uninitialized BOS descriptors\n\nMany functions in drivers/usb/core/hub.c and drivers/usb/core/hub.h\naccess fields inside udev-\u003ebos without checking if it was allocated and\ninitialized. If usb_get_bos_descriptor() fails for whatever\nreason, udev-\u003ebos will be NULL and those accesses will result in a\ncrash:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000018\nPGD 0 P4D 0\nOops: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 5 PID: 17818 Comm: kworker/5:1 Tainted: G W 5.15.108-18910-gab0e1cb584e1 #1 \u003cHASH:1f9e 1\u003e\nHardware name: Google Kindred/Kindred, BIOS Google_Kindred.12672.413.0 02/03/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:hub_port_reset+0x193/0x788\nCode: 89 f7 e8 20 f7 15 00 48 8b 43 08 80 b8 96 03 00 00 03 75 36 0f b7 88 92 03 00 00 81 f9 10 03 00 00 72 27 48 8b 80 a8 03 00 00 \u003c48\u003e 83 78 18 00 74 19 48 89 df 48 8b 75 b0 ba 02 00 00 00 4c 89 e9\nRSP: 0018:ffffab740c53fcf8 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffffa1bc5f678000 RCX: 0000000000000310\nRDX: fffffffffffffdff RSI: 0000000000000286 RDI: ffffa1be9655b840\nRBP: ffffab740c53fd70 R08: 00001b7d5edaa20c R09: ffffffffb005e060\nR10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000\nR13: ffffab740c53fd3e R14: 0000000000000032 R15: 0000000000000000\nFS: 0000000000000000(0000) GS:ffffa1be96540000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000018 CR3: 000000022e80c005 CR4: 00000000003706e0\nCall Trace:\nhub_event+0x73f/0x156e\n? hub_activate+0x5b7/0x68f\nprocess_one_work+0x1a2/0x487\nworker_thread+0x11a/0x288\nkthread+0x13a/0x152\n? process_one_work+0x487/0x487\n? kthread_associate_blkcg+0x70/0x70\nret_from_fork+0x1f/0x30\n\nFall back to a default behavior if the BOS descriptor isn't accessible\nand skip all the functionalities that depend on it: LPM support checks,\nSuper Speed capabilitiy checks, U1/U2 states setup.","modified":"2026-04-11T12:46:31.156798Z","published":"2024-02-29T05:43:10.088Z","related":["ALSA-2024:3618","ALSA-2024:3627","SUSE-SU-2024:1320-1","SUSE-SU-2024:1321-1","SUSE-SU-2024:1454-1","SUSE-SU-2024:1465-1","SUSE-SU-2024:1466-1","SUSE-SU-2024:1480-1","SUSE-SU-2024:1489-1","SUSE-SU-2024:1490-1","SUSE-SU-2024:1643-1","SUSE-SU-2024:1646-1","SUSE-SU-2024:1870-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52477.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/136f69a04e71ba3458d137aec3bb2ce1232c0289"},{"type":"WEB","url":"https://git.kernel.org/stable/c/241f230324337ed5eae3846a554fb6d15169872c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/528f0ba9f7a4bc1b61c9b6eb591ff97ca37cac6b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ad3e9fd3632106696692232bf7ff88b9f7e1bc3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8e7346bfea56453e31b7421c1c17ca2fb9ed613d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c64e4dca9aefd232b17ac4c779b608b286654e81"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f74a7afc224acd5e922c7a2e52244d891bbe44ee"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fb9895ab9533534335fa83d70344b397ac862c81"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52477.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52477"},{"type":"PACKAGE","url":"https://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":[{"introduced":"0cdd49a1d1a483d80170d9e592f832274e8bce1b"},{"fixed":"c64e4dca9aefd232b17ac4c779b608b286654e81"},{"fixed":"8e7346bfea56453e31b7421c1c17ca2fb9ed613d"},{"fixed":"6ad3e9fd3632106696692232bf7ff88b9f7e1bc3"},{"fixed":"241f230324337ed5eae3846a554fb6d15169872c"},{"fixed":"528f0ba9f7a4bc1b61c9b6eb591ff97ca37cac6b"},{"fixed":"fb9895ab9533534335fa83d70344b397ac862c81"},{"fixed":"136f69a04e71ba3458d137aec3bb2ce1232c0289"},{"fixed":"f74a7afc224acd5e922c7a2e52244d891bbe44ee"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52477.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.6.0"},{"fixed":"4.14.328"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.297"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.199"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.136"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.59"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.5.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52477.json"}}],"schema_version":"1.7.5"}