U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47652 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe() I got a null-ptr-deref report: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... RIP: 0010:fb_destroy_modelist+0x38/0x100 ... Call Trace: ufx_usb_probe.cold+0x2b5/0xac1 [smscufx] usb_probe_interface+0x1aa/0x3c0 [usbcore] really_probe+0x167/0x460 ... ret_from_fork+0x1f/0x30 If fb_alloc_cmap() fails in ufx_usb_probe(), fb_destroy_modelist() will be called to destroy modelist in the error handling path. But modelist has not been initialized yet, so it will result in null-ptr-deref. Initialize modelist before calling fb_alloc_cmap() to fix this bug.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0fd28daec73525382e5c992db8743bf76e42cd5c kernel.org Patch 
https://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27 kernel.org Patch 
https://git.kernel.org/stable/c/64ec3e678d76419f207b9cdd338dda438ca10b1c kernel.org Patch 
https://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d kernel.org Patch 
https://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a kernel.org Patch 
https://git.kernel.org/stable/c/d1b6a1f0c23b7164250479bf92e2893291dca539 kernel.org Patch 
https://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170 kernel.org Patch 
https://git.kernel.org/stable/c/da8b269cc0a2526ebeaccbe2484c999eb0f822cf kernel.org Patch 
https://git.kernel.org/stable/c/dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47652
NVD Published Date:
02/26/2025
NVD Last Modified:
03/18/2025
Source:
kernel.org