CVE-2021-1905

Possible use after free due to improper handling of memory mapping of multiple processes...

8.4 HighIn KEVFix available

Possible use after free due to improper handling of memory mapping of multiple processes simultaneously. in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.54%Up 1.1 points since May 7, 2021

What each source reports

CVE List Score used 8.4

Record: CVE-2021-1905
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-416
Updated: 2026-11-02

EUVDEUVD-2021-7369 8.4

Record: EUVD-2021-7369
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-jxmm-frjr-grqr 7.8

Possible use after free due to improper handling of memory mapping of multiple processes...

Record: GHSA-jxmm-frjr-grqr
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-416
Updated: 2026-11-02

CISA KEV No score

Qualcomm Multiple Chipsets Use-After-Free Vulnerability

Multiple Qualcomm Chipsets contain a use after free vulnerability due to improper handling of memory mapping of multiple processes simultaneously.

Record: CVE-2021-1905
Weakness: CWE-416
Updated: 2026-11-02

NVD 8.4

Record: CVE-2021-1905
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-416
Updated: 2026-11-02

Affected products

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Affected packages

Affected packages
Package	Affected	Fixed
`:linux_kernel:Qualcomm` Android	SoCVersion:0 up to SoCVersion:2021-05-05, plus listed versions SoCVersion	SoCVersion:2021-05-05

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-1905 is a high vulnerability (CVSS 8.4) in Qualcomm, Inc. Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Iot, Snapdragon Industrial Iot, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, published May 1, 2021. CISA lists it as known to be exploited, since November 3, 2021. EUVD reports exploitation since November 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.54%, the 75th percentile. Fixed in :linux_kernel:Qualcomm SoCVersion:2021-05-05.