7.8

CVE-2021-39685: google android Out-of-bounds Write

Modified
AliasesUBUNTU-CVE-2021-39685DEBIAN-CVE-2021-39685
Published 16-03-2022Last modified 04-08-2024

Vulnerability summary

CVE-2021-39685 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in google android. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 20 · Related 14
DLA-2940-1DLA-2941-1DSA-5050-1DSA-5096-1MGASA-2021-0574MGASA-2021-0575

Timeline

  1. 16-03-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In various setup methods of the USB gadget subsystem, there is a possible out of bounds write due to an incorrect flag check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-210292376References: Upstream kernel

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.46% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu68 products
  • linuxAll versions (No fix recorded) | < 4.4.0-229.263 | < 4.15.0-169.177 | < 5.4.0-100.113
  • linux-aws< 4.4.0-1109.115 | < 4.4.0-1145.160 | < 4.15.0-1121.129 | < 5.4.0-1066.69
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13< 5.13.0-1019.21~20.04.1
Debian1 product
  • linux< 5.15.5-2
Google1 product

3 vendors · 70 products

References

15 links
Show all 15 references