8.4
HIGH
CVE-2021-1940
Snapdragon Firmware After Free Vulnerability
Description

Use after free can occur due to improper handling of response from firmware in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

INFO

Published Date :

July 13, 2021, 6:15 a.m.

Last Modified :

June 12, 2023, 7:15 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

2.5
Public PoC/Exploit Available at Github

CVE-2021-1940 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-1940 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 Qualcomm aqt1000_firmware
2 Qualcomm qca6391_firmware
3 Qualcomm qca6420_firmware
4 Qualcomm qca6430_firmware
5 Qualcomm qca6574au_firmware
6 Qualcomm qca6595au_firmware
7 Qualcomm qca6696_firmware
8 Qualcomm sa6145p_firmware
9 Qualcomm sa6155p_firmware
10 Qualcomm sa8155p_firmware
11 Qualcomm sa8195p_firmware
12 Qualcomm sd855_firmware
13 Qualcomm sdx55m_firmware
14 Qualcomm wcd9341_firmware
15 Qualcomm wcd9380_firmware
16 Qualcomm wcn3980_firmware
17 Qualcomm wcn3988_firmware
18 Qualcomm wcn3998_firmware
19 Qualcomm wsa8810_firmware
20 Qualcomm wsa8815_firmware
21 Qualcomm ar8035_firmware
22 Qualcomm csra6620_firmware
23 Qualcomm csra6640_firmware
24 Qualcomm wcn3991_firmware
25 Qualcomm qca6564au_firmware
26 Qualcomm qca6574_firmware
27 Qualcomm qca6574a_firmware
28 Qualcomm qca6584au_firmware
29 Qualcomm qca8337_firmware
30 Qualcomm sa6155_firmware
31 Qualcomm sa8155_firmware
32 Qualcomm sd_8cx_firmware
33 Qualcomm sd660_firmware
34 Qualcomm sd730_firmware
35 Qualcomm sdx55_firmware
36 Qualcomm sm6250_firmware
37 Qualcomm sm6250p_firmware
38 Qualcomm wcd9335_firmware
39 Qualcomm wcd9340_firmware
40 Qualcomm wcd9370_firmware
41 Qualcomm wcd9375_firmware
42 Qualcomm wcn3950_firmware
43 Qualcomm wcn3990_firmware
44 Qualcomm wcn3660b_firmware
45 Qualcomm sa515m_firmware
46 Qualcomm sda429w_firmware
47 Qualcomm wcn3610_firmware
48 Qualcomm qca6564a_firmware
49 Qualcomm qcs410_firmware
50 Qualcomm qcs610_firmware
51 Qualcomm sa415m_firmware
52 Qualcomm fsm10056_firmware
53 Qualcomm qca6564_firmware
54 Qualcomm sd_675_firmware
55 Qualcomm sd675_firmware
56 Qualcomm sd678_firmware
57 Qualcomm sdx50m_firmware
58 Qualcomm qcm6125_firmware
59 Qualcomm qcs6125_firmware
60 Qualcomm wcn3620_firmware
61 Qualcomm sd665_firmware
62 Qualcomm ar8031_firmware
63 Qualcomm sd720g_firmware
64 Qualcomm qcs405_firmware
65 Qualcomm wcn3999_firmware
66 Qualcomm fsm10055_firmware
67 Qualcomm sd_8c_firmware
: Total Affected Vendor : 1 | Products : 67
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-2021-1940.

URL Resource
http://packetstormsecurity.com/files/172856/Qualcomm-NPU-Use-After-Free-Information-Leak.html
https://www.qualcomm.com/company/product-security/bulletins/july-2021-bulletin Patch Vendor Advisory

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).

Profile Photo
ndk06/linux-kernel-exploitation

None

Updated: 2 months, 3 weeks ago
6 stars 0 fork 0 watcher
Born at : Feb. 25, 2023, 10:40 a.m. This repo has been linked 178 different CVEs too.
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xairy/linux-kernel-exploitation

A collection of links related to Linux kernel security and exploitation

linux-kernel kernel-exploitation exploit privilege-escalation security

Updated: 2 months, 2 weeks ago
5527 stars 902 fork 902 watcher
Born at : Nov. 13, 2016, 10:21 p.m. This repo has been linked 225 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-1940 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-1940 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.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jun. 12, 2023

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/172856/Qualcomm-NPU-Use-After-Free-Information-Leak.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.qualcomm.com/company/product-security/bulletins/july-2021-bulletin No Types Assigned https://www.qualcomm.com/company/product-security/bulletins/july-2021-bulletin Patch, Vendor Advisory
    Added CWE NIST CWE-416
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:aqt1000_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:aqt1000:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:ar8031_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:ar8031:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:ar8035:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:csra6620_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:csra6620:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:csra6640_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:csra6640:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:fsm10055_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:fsm10055:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:fsm10056_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:fsm10056:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6391:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6420_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6420:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6430_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6430:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6564_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6564:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6564a_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6564a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6564au_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6564au:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6574_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6574:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6574a_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6574a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6574au:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6584au_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6584au:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6595au:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca6696:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qca8337:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qcm6125_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qcm6125:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qcs405_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qcs405:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qcs410_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qcs410:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qcs610_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qcs610:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:qcs6125_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:qcs6125:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa415m_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa415m:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa515m_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa515m:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa6145p_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa6145p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa6155_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa6155:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa6155p_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa6155p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa8155_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa8155:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa8155p_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa8155p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sa8195p_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sa8195p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd_675_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd_675:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd_8c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd_8c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd_8cx_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd_8cx:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd660_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd660:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd665_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd665:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd675_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd675:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd678_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd678:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd720g_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd720g:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd730_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd730:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sd855_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sd855:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sda429w_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sda429w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sdx50m_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sdx50m:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sdx55:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sdx55m_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sdx55m:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sm6250_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sm6250:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:sm6250p_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:sm6250p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcd9335_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcd9335:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcd9340_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcd9340:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcd9341_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcd9341:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcd9370_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcd9370:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcd9375_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcd9375:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcd9380:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3610_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3610:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3620_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3620:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3660b_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3660b:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3950_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3950:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3980_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3980:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3988_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3988:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3990_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3990:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3991_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3991:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3998_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3998:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wcn3999_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wcn3999:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wsa8810_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wsa8810:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:qualcomm:wsa8815_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:qualcomm:wsa8815:-:*:*:*:*:*:*:*
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-2021-1940 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-2021-1940 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10264

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: