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-2021-47295 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was in non-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindex_partial_destroy_work() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.


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/01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b kernel.org
https://git.kernel.org/stable/c/18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6 kernel.org
https://git.kernel.org/stable/c/372ae77cf11d11fb118cbe2d37def9dd5f826abd kernel.org
https://git.kernel.org/stable/c/3abebc503a5148072052c229c6b04b329a420ecd kernel.org
https://git.kernel.org/stable/c/53af9c793f644d5841d84d8e0ad83bd7ab47f3e0 kernel.org
https://git.kernel.org/stable/c/7a6fb69bbcb21e9ce13bdf18c008c268874f0480 kernel.org
https://git.kernel.org/stable/c/7c183dc0af472dec33d2c0786a5e356baa8cad19 kernel.org
https://git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b CVE, kernel.org Patch 
https://git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32 CVE, kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption CISA-ADP  

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

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47295
NVD Published Date:
05/21/2024
NVD Last Modified:
12/06/2025
Source:
kernel.org