CVE - CVE-2023-52477

CVE-ID
CVE-2023-52477	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: usb: hub: Guard against accesses to uninitialized BOS descriptors Many functions in drivers/usb/core/hub.c and drivers/usb/core/hub.h access fields inside udev->bos without checking if it was allocated and initialized. If usb_get_bos_descriptor() fails for whatever reason, udev->bos will be NULL and those accesses will result in a crash: BUG: kernel NULL pointer dereference, address: 0000000000000018 PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 5 PID: 17818 Comm: kworker/5:1 Tainted: G W 5.15.108-18910-gab0e1cb584e1 #1 <HASH:1f9e 1> Hardware name: Google Kindred/Kindred, BIOS Google_Kindred.12672.413.0 02/03/2021 Workqueue: usb_hub_wq hub_event RIP: 0010:hub_port_reset+0x193/0x788 Code: 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 <48> 83 78 18 00 74 19 48 89 df 48 8b 75 b0 ba 02 00 00 00 4c 89 e9 RSP: 0018:ffffab740c53fcf8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffa1bc5f678000 RCX: 0000000000000310 RDX: fffffffffffffdff RSI: 0000000000000286 RDI: ffffa1be9655b840 RBP: ffffab740c53fd70 R08: 00001b7d5edaa20c R09: ffffffffb005e060 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffffab740c53fd3e R14: 0000000000000032 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffffa1be96540000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 000000022e80c005 CR4: 00000000003706e0 Call Trace: hub_event+0x73f/0x156e ? hub_activate+0x5b7/0x68f process_one_work+0x1a2/0x487 worker_thread+0x11a/0x288 kthread+0x13a/0x152 ? process_one_work+0x487/0x487 ? kthread_associate_blkcg+0x70/0x70 ret_from_fork+0x1f/0x30 Fall back to a default behavior if the BOS descriptor isn't accessible and skip all the functionalities that depend on it: LPM support checks, Super Speed capabilitiy checks, U1/U2 states setup.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/136f69a04e71ba3458d137aec3bb2ce1232c0289 URL:https://git.kernel.org/stable/c/136f69a04e71ba3458d137aec3bb2ce1232c0289 MISC:https://git.kernel.org/stable/c/241f230324337ed5eae3846a554fb6d15169872c URL:https://git.kernel.org/stable/c/241f230324337ed5eae3846a554fb6d15169872c MISC:https://git.kernel.org/stable/c/528f0ba9f7a4bc1b61c9b6eb591ff97ca37cac6b URL:https://git.kernel.org/stable/c/528f0ba9f7a4bc1b61c9b6eb591ff97ca37cac6b MISC:https://git.kernel.org/stable/c/6ad3e9fd3632106696692232bf7ff88b9f7e1bc3 URL:https://git.kernel.org/stable/c/6ad3e9fd3632106696692232bf7ff88b9f7e1bc3 MISC:https://git.kernel.org/stable/c/8e7346bfea56453e31b7421c1c17ca2fb9ed613d URL:https://git.kernel.org/stable/c/8e7346bfea56453e31b7421c1c17ca2fb9ed613d MISC:https://git.kernel.org/stable/c/c64e4dca9aefd232b17ac4c779b608b286654e81 URL:https://git.kernel.org/stable/c/c64e4dca9aefd232b17ac4c779b608b286654e81 MISC:https://git.kernel.org/stable/c/f74a7afc224acd5e922c7a2e52244d891bbe44ee URL:https://git.kernel.org/stable/c/f74a7afc224acd5e922c7a2e52244d891bbe44ee MISC:https://git.kernel.org/stable/c/fb9895ab9533534335fa83d70344b397ac862c81 URL:https://git.kernel.org/stable/c/fb9895ab9533534335fa83d70344b397ac862c81
Assigning CNA
kernel.org
Date Record Created
20240220	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240220)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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