CVE-2024-41035

CVE Details

Release Date:

2024-07-29

Description

In the Linux kernel, the following vulnerability has been resolved:\nUSB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor\nSyzbot has identified a bug in usbcore (see the Closes: tag below)\ncaused by our assumption that the reserved bits in an endpoint\ndescriptor's bEndpointAddress field will always be 0. As a result of\nthe bug, the endpoint_is_duplicate() routine in config.c (and possibly\nother routines as well) may believe that two descriptors are for\ndistinct endpoints, even though they have the same direction and\nendpoint number. This can lead to confusion, including the bug\nidentified by syzbot (two descriptors with matching endpoint numbers\nand directions, where one was interrupt and the other was bulk).\nTo fix the bug, we will clear the reserved bits in bEndpointAddress\nwhen we parse the descriptor. (Note that both the USB-2.0 and USB-3.1\nspecs say these bits are 'Reserved, reset to zero'.) This requires us\nto make a copy of the descriptor earlier in usb_parse_endpoint() and\nuse the copy instead of the original when checking for duplicates.

See more information about CVE-2024-41035 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12610	2024-09-10
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12779	2024-10-11
Oracle Linux version 7 (kernel-uek-container)	ELSA-2024-12612	2024-09-11
Oracle Linux version 8 (kernel)	ELSA-2024-7000	2024-09-24
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12610	2024-09-10
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12618	2024-09-12
Oracle Linux version 8 (kernel-uek-container)	ELSA-2024-12612	2024-09-11
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12618	2024-09-12