5.5
MEDIUM CVSS 3.1
CVE-2021-47021
Qualcomm Wireless Networking MT76 Driver Memory Leak
Description

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7915: fix memleak when mt7915_unregister_device() mt7915_tx_token_put() should get call before mt76_free_pending_txwi().

INFO

Published Date :

Feb. 28, 2024, 9:15 a.m.

Last Modified :

Dec. 9, 2024, 5:59 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2021-47021 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
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
This information is provided by the 3rd party feeds.
  • n/a
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-47021 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-2021-47021 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-2021-47021 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-47021 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.

  • Initial Analysis by [email protected]

    Dec. 09, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE NIST CWE-401
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.4 up to (excluding) 5.11.21 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.4
    Changed Reference Type https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364 No Types Assigned https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364 Patch
    Changed Reference Type https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364 No Types Assigned https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364 Patch
    Changed Reference Type https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52 No Types Assigned https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52 Patch
    Changed Reference Type https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52 No Types Assigned https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52 Patch
    Changed Reference Type https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4 No Types Assigned https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4 Patch
    Changed Reference Type https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4 No Types Assigned https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4 Patch
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364
    Added Reference https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52
    Added Reference https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 28, 2024

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 28, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: mt76: mt7915: fix memleak when mt7915_unregister_device() mt7915_tx_token_put() should get call before mt76_free_pending_txwi().
    Added Reference Linux https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364 [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52 [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4 [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.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact