CVE-2021-42008: debian debian_linux Out-of-bounds Write

CVSS: 7.8v3.1HighModified

AliasesUBUNTU-CVE-2021-42008DEBIAN-CVE-2021-42008

Published 04-10-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-42008 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 1.56% chance of exploitation in the next 30 days, higher than 74.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk

42/100

0100

Medium · default modelHow is this calculated?

CVSS score

7.8/10

010

High · v3.1 (NVD)

EPSS score

1.56%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits1reference

Timeline

04-10-2021
PublishedVulnerability first disclosed.
04-08-2024
Last modifiedVulnerability information updated.

Description

The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.

CVSS metrics

4 scores · 3 sources · 2 versions

v3.17.8v2.06.9

EPSS trend

Probability

1.56%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.56% on 19-09-2026

19-09-202619-10-2026

EPSS score

1.56%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found

referenceUnverified
Exploit Reference (youtube.com)
Maturity: unknown

Weaknesses

CWE · root cause

CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.

Affected systems

Ubuntu61 products

linuxAll versions (No fix recorded) | < 4.4.0-219.252 | < 4.15.0-161.169 | < 5.4.0-89.100
linux-aws< 4.4.0-1099.104 | < 4.4.0-1135.149 | < 4.15.0-1114.121 | < 5.4.0-1058.61
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11< 5.11.0-1020.21~20.04.2
linux-aws-5.3All versions (No fix recorded)

linux-aws-5.4< 5.4.0-1058.61~18.04.3
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2055.57 | All versions (No fix recorded) | < 5.4.0-1069.73+fips2
linux-aws-hwe< 4.15.0-1113.120~16.04.1
linux-azure< 4.15.0-1125.138~14.04.1 | < 4.15.0-1125.138~16.04.1 | All versions (No fix recorded) | < 5.4.0-1062.65
linux-azure-4.15< 4.15.0-1125.138
linux-azure-5.11< 5.11.0-1020.21~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1062.65~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fips< 4.15.0-2037.41 | All versions (No fix recorded) | < 5.4.0-1073.76+fips1
linux-bluefield< 5.4.0-1020.23
linux-dell300x< 4.15.0-1029.34
linux-fips< 4.4.0-1069.75 | All versions (No fix recorded) | < 4.15.0-1071.80 | < 5.4.0-1035.41
linux-gcp< 4.15.0-1110.124~16.04.1 | All versions (No fix recorded) | < 5.4.0-1056.60
linux-gcp-4.15< 4.15.0-1110.124
linux-gcp-5.11< 5.11.0-1021.23~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1056.60~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-edgeAll versions (No fix recorded)
linux-gcp-fips< 4.15.0-2020.22 | All versions (No fix recorded) | < 5.4.0-1067.71~20.04.1
linux-gke< 5.4.0-1054.57
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.4< 5.4.0-1054.57~18.04.1
linux-gkeop< 5.4.0-1025.26
linux-gkeop-5.4< 5.4.0-1025.26~18.04.1
linux-hwe< 4.15.0-161.169~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11< 5.11.0-38.42~20.04.1
linux-hwe-5.4< 5.4.0-89.100~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1006.7
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-kvm< 4.4.0-1100.109 | < 4.15.0-1101.103 | < 5.4.0-1048.50
linux-lts-xenial< 4.4.0-219.252~14.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10< 5.10.0-1050.52
linux-oem-5.13< 5.13.0-1014.18
linux-oem-5.6All versions (No fix recorded)
linux-oracle< 4.15.0-1082.90~16.04.1 | < 4.15.0-1082.90 | < 5.4.0-1056.60
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11< 5.11.0-1020.21~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1056.60~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1045.49
linux-raspi-5.4< 5.4.0-1045.49~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1097.103 | All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded)
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11< 5.11.0-1021.22~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1114.123

Show all 61

Netapp9 products

Show all 9

Debian2 products

linux< 5.14.6-1
debian_linuxEOL9.0

Linux1 product

linux_kernel≥ 2.6.12, < 4.4.282 | ≥ 4.5, < 4.9.281 | ≥ 4.10, < 4.14.245 | ≥ 4.15, < 4.19.205 | ≥ 4.20, < 5.4.143 | ≥ 5.5, < 5.10.61 | ≥ 5.11, < 5.13.13

4 vendors · 73 products