CVE-2024-36977

CVE Details

Release Date:	2024-06-18
Impact:	Low	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved:\nusb: dwc3: Wait unconditionally after issuing EndXfer command\nCurrently all controller IP/revisions except DWC3_usb3 >= 310a\nwait 1ms unconditionally for ENDXFER completion when IOC is not\nset. This is because DWC_usb3 controller revisions >= 3.10a\nsupports GUCTL2[14: Rst_actbitlater] bit which allows polling\nCMDACT bit to know whether ENDXFER command is completed.\nConsider a case where an IN request was queued, and parallelly\nsoft_disconnect was called (due to ffs_epfile_release). This\neventually calls stop_active_transfer with IOC cleared, hence\nsend_gadget_ep_cmd() skips waiting for CMDACT cleared during\nEndXfer. For DWC3 controllers with revisions >= 310a, we don't\nforcefully wait for 1ms either, and we proceed by unmapping the\nrequests. If ENDXFER didn't complete by this time, it leads to\nSMMU faults since the controller would still be accessing those\nrequests.\nFix this by ensuring ENDXFER completion by adding 1ms delay in\n__dwc3_stop_active_transfer() unconditionally.

See more information about CVE-2024-36977 from MITRE CVE dictionary and NIST NVD

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

CVSS v3 metrics

Base Score:	4.4
Vector String:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	High
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14