CVE-2021-3609: linux linux_kernel

Modified

AliasesLSN-0078-1UBUNTU-CVE-2021-3609USN-5002-1+1 more

Published 03-03-2022Last modified 03-08-2024

Vulnerability summary

CVE-2021-3609 is a high (CVSS 7.0) vulnerability in linux linux_kernel. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 37.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority

Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?

CVSS score

7.0/10

010

High · v3.1 (NVD)

EPSS score

0.43%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits1github

Timeline

03-03-2022
PublishedVulnerability first disclosed.
03-08-2024
Last modifiedVulnerability information updated.

Description

.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.

CVSS metrics

4 scores · 3 sources · 2 versions

v3.17.0v2.06.9

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.43% 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

1 found

githubUnverified
Kernel Exploitation
Maturity: poc

Weaknesses

CWE · root cause

CWE-362Concurrent Execution using Shared Resource with Improper SynchronizationThe product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

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

linux< 4.15.0-147.151 | < 5.4.0-77.86 | All versions (No fix recorded) | < 4.4.0-229.263
linux-aws< 4.4.0-1109.115 | < 4.4.0-1145.160 | < 4.15.0-1106.113 | < 5.4.0-1051.53
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11< 5.11.0-1014.15~20.04.1
linux-aws-5.3All versions (No fix recorded)

linux-aws-5.4< 5.4.0-1051.53~18.04.1
linux-aws-5.8< 5.8.0-1038.40~20.04.1
linux-aws-fips< 4.15.0-2048.50 | All versions (No fix recorded) | < 5.4.0-1069.73+fips2
linux-aws-hwe< 4.15.0-1106.113~16.04.1
linux-azure< 4.15.0-1118.131~14.04.1 | < 4.15.0-1118.131~16.04.1 | All versions (No fix recorded) | < 5.4.0-1051.53
linux-azure-4.15< 4.15.0-1118.131
linux-azure-5.11< 5.11.0-1012.13~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1051.53~18.04.1
linux-azure-5.8< 5.8.0-1036.38~20.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fips< 4.15.0-2030.33 | All versions (No fix recorded) | < 5.4.0-1073.76+fips1
linux-bluefield< 5.4.0-1016.19
linux-dell300x< 4.15.0-1022.26
linux-fips< 4.4.0-1079.86 | All versions (No fix recorded) | < 4.15.0-1063.71 | < 5.4.0-1028.32
linux-gcp< 5.4.0-1046.49 | < 4.15.0-1103.116~16.04.1 | All versions (No fix recorded)
linux-gcp-4.15< 4.15.0-1103.116
linux-gcp-5.11< 5.11.0-1014.16~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1046.49~18.04.1
linux-gcp-5.8< 5.8.0-1035.37~20.04.1
linux-gcp-edgeAll versions (No fix recorded)
linux-gcp-fipsAll versions (No fix recorded) | < 5.4.0-1067.71~20.04.1
linux-gke< 5.4.0-1046.48
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.3< 5.3.0-1044.47
linux-gke-5.4< 5.4.0-1046.48~18.04.1
linux-gkeop< 5.4.0-1018.19
linux-gkeop-5.4< 5.4.0-1018.19~18.04.1
linux-hwe< 4.15.0-147.151~16.04.1 | < 5.3.0-75.71
linux-hwe-5.4< 5.4.0-77.86~18.04.1
linux-hwe-5.8< 5.8.0-59.66~20.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-kvm< 4.4.0-1110.120 | < 4.15.0-1094.96 | < 5.4.0-1044.46
linux-lts-xenial< 4.4.0-229.263~14.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10< 5.10.0-1033.34
linux-oem-5.13< 5.13.0-1012.16
linux-oem-5.6All versions (No fix recorded)
linux-oracle< 4.15.0-1075.83~16.04.1 | < 4.15.0-1075.83 | < 5.4.0-1048.52
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11< 5.11.0-1013.14~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1048.52~18.04.1
linux-oracle-5.8< 5.8.0-1033.34~20.04.1
linux-raspi< 5.4.0-1038.41
linux-raspi-5.4< 5.4.0-1038.41~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1089.94 | All versions (No fix recorded)
linux-raspi2-5.3< 5.3.0-1041.43
linux-realtimeAll versions (No fix recorded)
linux-riscvAll versions (No fix recorded)
linux-riscv-5.8< 5.8.0-29.31~20.04.1
linux-snapdragon< 4.15.0-1106.115

Show all 60

Redhat20 products

3scale_api_management2.0
build_of_quarkus1.0
codeready_linux_builder_eus8.1 | 8.2 | 8.4
codeready_linux_builder_for_power_little_endian_eus8.1 | 8.2 | 8.4
enterprise_linux_aus8.2

Show all 20

Netapp11 products

Show all 11

Debian1 product

linux< 5.10.46-1

Linux1 product

linux_kernel≥ 2.6.25, < 4.4.276 | ≥ 4.5, < 4.9.276 | ≥ 4.10, < 4.14.240 | ≥ 4.15, < 4.19.198 | ≥ 4.20, < 5.4.132 | ≥ 5.5.0, < 5.10.50 | ≥ 5.11, < 5.12.17 | ≥ 5.13, < 5.13.2

5 vendors · 93 products