CVE-2021-3612: debian debian_linux Improper Input Validation

Modified

AliasesUBUNTU-CVE-2021-3612DEBIAN-CVE-2021-3612

Published 09-07-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-3612 is a high (CVSS 7.8) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52.7% 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

0.69%

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

Timeline

09-07-2021
PublishedVulnerability first disclosed.
03-08-2024
Last modifiedVulnerability information updated.

Description

An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS metrics

4 scores · 3 sources · 2 versions

v3.17.8v2.07.2

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.69% 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.

Ubuntu60 products

linuxAll versions (No fix recorded) | < 4.4.0-219.252 | < 4.15.0-156.163 | < 5.4.0-84.94
linux-aws< 4.4.0-1099.104 | < 4.4.0-1135.149 | < 4.15.0-1111.118 | < 5.4.0-1056.59
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11< 5.11.0-1017.18~20.04.1
linux-aws-5.3All versions (No fix recorded)

linux-aws-5.4< 5.4.0-1056.59~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2053.55 | All versions (No fix recorded) | < 5.4.0-1069.73+fips2
linux-aws-hwe< 4.15.0-1111.118~16.04.1
linux-azure< 4.15.0-1123.136~14.04.1 | < 4.15.0-1123.136~16.04.1 | All versions (No fix recorded) | < 5.4.0-1058.60
linux-azure-4.15< 4.15.0-1123.136
linux-azure-5.11< 5.11.0-1015.16~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1058.60~18.04.1
linux-azure-5.8< 5.8.0-1043.46~20.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fips< 4.15.0-2035.39 | All versions (No fix recorded) | < 5.4.0-1073.76+fips1
linux-bluefield< 5.4.0-1019.22
linux-dell300x< 4.15.0-1027.32
linux-fips< 4.4.0-1069.75 | All versions (No fix recorded) | < 4.15.0-1069.78 | < 5.4.0-1033.38
linux-gcp< 4.15.0-1108.122~16.04.1 | All versions (No fix recorded) | < 5.4.0-1052.56
linux-gcp-4.15< 4.15.0-1108.122
linux-gcp-5.11< 5.11.0-1018.20~20.04.2
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1052.56~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-edgeAll versions (No fix recorded)
linux-gcp-fips< 4.15.0-2018.20 | All versions (No fix recorded) | < 5.4.0-1067.71~20.04.1
linux-gke< 5.4.0-1052.55
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.4< 5.4.0-1052.55~18.04.1
linux-gkeop< 5.4.0-1023.24
linux-gkeop-5.4< 5.4.0-1023.24~18.04.1
linux-hwe< 4.15.0-156.163~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11< 5.11.0-34.36~20.04.1
linux-hwe-5.4< 5.4.0-84.94~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-kvm< 4.4.0-1100.109 | < 4.15.0-1099.101 | < 5.4.0-1046.48
linux-lts-xenial< 4.4.0-219.252~14.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10< 5.10.0-1049.51
linux-oem-5.13< 5.13.0-1014.18
linux-oem-5.6All versions (No fix recorded)
linux-oracle< 4.15.0-1080.88~16.04.1 | < 4.15.0-1080.88 | < 5.4.0-1054.58
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11< 5.11.0-1017.18~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1054.58~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1043.47
linux-raspi-5.4< 5.4.0-1043.47~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1095.101 | All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded)
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11< 5.11.0-1018.19~20.04.2
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1112.121