5.5
MEDIUM
CVE-2021-47620
Linux Bluetooth Out-of-Bound Read Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.

INFO

Published Date :

June 20, 2024, 11:15 a.m.

Last Modified :

Sept. 18, 2024, 5:07 p.m.

Source :

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

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-47620 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-2021-47620.

URL Resource
https://git.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082 Patch
https://git.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0e Patch
https://git.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba618025e Patch
https://git.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465c Patch
https://git.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67 Patch
https://git.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba Patch
https://git.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fb Patch
https://git.kernel.org/stable/c/899663be5e75dc0174dc8bda0b5e6826edf0b29a Patch
https://git.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1c Patch

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-2021-47620 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-47620 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]

    Sep. 18, 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:H/A:N
    Changed Reference Type https://git.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082 No Types Assigned https://git.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082 Patch
    Changed Reference Type https://git.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0e No Types Assigned https://git.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0e Patch
    Changed Reference Type https://git.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba618025e No Types Assigned https://git.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba618025e Patch
    Changed Reference Type https://git.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465c No Types Assigned https://git.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465c Patch
    Changed Reference Type https://git.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67 No Types Assigned https://git.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67 Patch
    Changed Reference Type https://git.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba No Types Assigned https://git.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba Patch
    Changed Reference Type https://git.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fb No Types Assigned https://git.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fb Patch
    Changed Reference Type https://git.kernel.org/stable/c/899663be5e75dc0174dc8bda0b5e6826edf0b29a No Types Assigned https://git.kernel.org/stable/c/899663be5e75dc0174dc8bda0b5e6826edf0b29a Patch
    Changed Reference Type https://git.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1c No Types Assigned https://git.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1c Patch
    Added CWE NIST CWE-125
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.4.302 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.300 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.265 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.228 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.176 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.96 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.5
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jun. 20, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.
    Added Reference kernel.org https://git.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465c [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0e [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fb [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1c [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba618025e [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/899663be5e75dc0174dc8bda0b5e6826edf0b29a [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-2021-47620 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-2021-47620 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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