CVE-2021-30337

Possible use after free when process shell memory is freed using IOCTL call and process...

8.4 HighFix available

Possible use after free when process shell memory is freed using IOCTL call and process initialization is in progress in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

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

0.16%Down 0.3 points since Jan 3, 2022

What each source reports

CVE List Score used 8.4

Record: CVE-2021-30337
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-2021-17268 8.4

Record: EUVD-2021-17268
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-99qr-vp84-f5fh 7.8

Possible use after free when process shell memory is freed using IOCTL call and process...

Record: GHSA-99qr-vp84-f5fh
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

NVD 8.4

Record: CVE-2021-30337
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:2021-12-05, plus listed versions SoCVersion	SoCVersion:2021-12-05

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2021-30337 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, Snapdragon Wired Infrastructure And Networking, published December 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. Fixed in :linux_kernel:Qualcomm SoCVersion:2021-12-05.