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CVE-2023-54186
usb: typec: altmodes/displayport: fix pin_assignment_show
Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: fix pin_assignment_show This patch fixes negative indexing of buf array in pin_assignment_show when get_current_pin_assignments returns 0 i.e. no compatible pin assignments are found. BUG: KASAN: use-after-free in pin_assignment_show+0x26c/0x33c ... Call trace: dump_backtrace+0x110/0x204 dump_stack_lvl+0x84/0xbc print_report+0x358/0x974 kasan_report+0x9c/0xfc __do_kernel_fault+0xd4/0x2d4 do_bad_area+0x48/0x168 do_tag_check_fault+0x24/0x38 do_mem_abort+0x6c/0x14c el1_abort+0x44/0x68 el1h_64_sync_handler+0x64/0xa4 el1h_64_sync+0x78/0x7c pin_assignment_show+0x26c/0x33c dev_attr_show+0x50/0xc0

INFO

Published Date :

Dec. 30, 2025, 1:16 p.m.

Last Modified :

Dec. 30, 2025, 1:16 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2023-54186 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.

No affected product recoded yet

: Total Affected Vendor : 0 | Products : 0
Solution
Apply the Linux kernel patch for the USB Type-C DisplayPort altmode vulnerability.
  • Update the Linux kernel to the latest stable version.
  • Apply the specific patch for usb: typec: altmodes/displayport.
  • Recompile and install the patched kernel.
  • Reboot the system.
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-2023-54186.

URL Resource
https://git.kernel.org/stable/c/08bd1be1c716fd50a7df48f82dcbc59a103082b5
https://git.kernel.org/stable/c/0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2
https://git.kernel.org/stable/c/4f9c0a7c272626cb6716ffc7800e8c73260cdce6
https://git.kernel.org/stable/c/54ee23e4ab263a495ace1eed43d3883212ece17f
https://git.kernel.org/stable/c/d8f28269dd4bf9b55c3fb376ae31512730a96fce
https://git.kernel.org/stable/c/fc0e18f95c88435bd8a1ceb540243cd7fbcd9781
https://git.kernel.org/stable/c/ff466f77d0a56719979c4234abd412abd98eae8f
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-54186 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-2023-54186 weaknesses.

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-2023-54186 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-54186 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.

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

    Dec. 30, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: fix pin_assignment_show This patch fixes negative indexing of buf array in pin_assignment_show when get_current_pin_assignments returns 0 i.e. no compatible pin assignments are found. BUG: KASAN: use-after-free in pin_assignment_show+0x26c/0x33c ... Call trace: dump_backtrace+0x110/0x204 dump_stack_lvl+0x84/0xbc print_report+0x358/0x974 kasan_report+0x9c/0xfc __do_kernel_fault+0xd4/0x2d4 do_bad_area+0x48/0x168 do_tag_check_fault+0x24/0x38 do_mem_abort+0x6c/0x14c el1_abort+0x44/0x68 el1h_64_sync_handler+0x64/0xa4 el1h_64_sync+0x78/0x7c pin_assignment_show+0x26c/0x33c dev_attr_show+0x50/0xc0
    Added Reference https://git.kernel.org/stable/c/08bd1be1c716fd50a7df48f82dcbc59a103082b5
    Added Reference https://git.kernel.org/stable/c/0e61a7432fcd4bca06f05b7f1c7d7cb461880fe2
    Added Reference https://git.kernel.org/stable/c/4f9c0a7c272626cb6716ffc7800e8c73260cdce6
    Added Reference https://git.kernel.org/stable/c/54ee23e4ab263a495ace1eed43d3883212ece17f
    Added Reference https://git.kernel.org/stable/c/d8f28269dd4bf9b55c3fb376ae31512730a96fce
    Added Reference https://git.kernel.org/stable/c/fc0e18f95c88435bd8a1ceb540243cd7fbcd9781
    Added Reference https://git.kernel.org/stable/c/ff466f77d0a56719979c4234abd412abd98eae8f
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.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.