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CVE-2021-39713

24
FAUCET Score

CVE-2021-39713 is a high-severity vulnerability (CVSS 7.0) affecting the Android kernel, specifically impacting Google Android and Debian Linux distributions. This flaw, categorized as a concurrency issue (CWE-362), allows a local, low-privileged attacker to achieve high impact on confidentiality, integrity, and availability with high attack complexity. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
11.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 37th percentile among its peer group of 1,525 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

googlepatch availablevia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Virtualization 4Fixed in: redhat-virtualization-host

Vendor Advisories (1)

redhatCVE-2021-39713Moderate

kernel: race condition in the network scheduling subsystem could lead to an use-after-free

Mar 7, 2022

References

packetstormsecurity.com / files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
ExploitThird Party AdvisoryVDB Entry
lists.debian.org / debian-lts-announce/2022/07/msg00000.html
Mailing ListThird Party Advisory
source.android.com / security/bulletin/pixel/2022-03-01
PatchVendor Advisory