0.0
NA
CVE-2024-36977
USB: Linux DWc3 EndXfer Command Unconditional Wait
Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: Wait unconditionally after issuing EndXfer command Currently all controller IP/revisions except DWC3_usb3 >= 310a wait 1ms unconditionally for ENDXFER completion when IOC is not set. This is because DWC_usb3 controller revisions >= 3.10a supports GUCTL2[14: Rst_actbitlater] bit which allows polling CMDACT bit to know whether ENDXFER command is completed. Consider a case where an IN request was queued, and parallelly soft_disconnect was called (due to ffs_epfile_release). This eventually calls stop_active_transfer with IOC cleared, hence send_gadget_ep_cmd() skips waiting for CMDACT cleared during EndXfer. For DWC3 controllers with revisions >= 310a, we don't forcefully wait for 1ms either, and we proceed by unmapping the requests. If ENDXFER didn't complete by this time, it leads to SMMU faults since the controller would still be accessing those requests. Fix this by ensuring ENDXFER completion by adding 1ms delay in __dwc3_stop_active_transfer() unconditionally.

INFO

Published Date :

June 18, 2024, 8:15 p.m.

Last Modified :

June 20, 2024, 12:44 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Affected Products

The following products are affected by CVE-2024-36977 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-36977.

URL Resource
https://git.kernel.org/stable/c/1ba145f05b5c8f0b1a947a0633b5edff5dd1f1c5
https://git.kernel.org/stable/c/1d26ba0944d398f88aaf997bda3544646cf21945
https://git.kernel.org/stable/c/341eb08dbca9eae05308c442fbfab1813a44c97a
https://git.kernel.org/stable/c/4a387e032909c6dc2b479452c5bbe9a252057925
https://git.kernel.org/stable/c/ec96bcf5f96a7a5c556b0e881ac3e5c3924d542c

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-36977 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-36977 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jun. 18, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: Wait unconditionally after issuing EndXfer command Currently all controller IP/revisions except DWC3_usb3 >= 310a wait 1ms unconditionally for ENDXFER completion when IOC is not set. This is because DWC_usb3 controller revisions >= 3.10a supports GUCTL2[14: Rst_actbitlater] bit which allows polling CMDACT bit to know whether ENDXFER command is completed. Consider a case where an IN request was queued, and parallelly soft_disconnect was called (due to ffs_epfile_release). This eventually calls stop_active_transfer with IOC cleared, hence send_gadget_ep_cmd() skips waiting for CMDACT cleared during EndXfer. For DWC3 controllers with revisions >= 310a, we don't forcefully wait for 1ms either, and we proceed by unmapping the requests. If ENDXFER didn't complete by this time, it leads to SMMU faults since the controller would still be accessing those requests. Fix this by ensuring ENDXFER completion by adding 1ms delay in __dwc3_stop_active_transfer() unconditionally.
    Added Reference kernel.org https://git.kernel.org/stable/c/341eb08dbca9eae05308c442fbfab1813a44c97a [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/ec96bcf5f96a7a5c556b0e881ac3e5c3924d542c [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/4a387e032909c6dc2b479452c5bbe9a252057925 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/1ba145f05b5c8f0b1a947a0633b5edff5dd1f1c5 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/1d26ba0944d398f88aaf997bda3544646cf21945 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-36977 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-36977 weaknesses.

NONE - Vulnerability Scoring System
: