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HIGH

CVE-2021-42008

CVSS v3

7.8

HIGH

EPSS Score

1.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2021-42008 Red Hat Product Security

    kernel: slab out-of-bounds write in decode_data() in drivers/net/hamradio/6pack.c

Full record on NVD

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.

Technical details

Published
2021-10-05

Frequently asked questions

What is CVE-2021-42008?

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.

Is CVE-2021-42008 actively exploited?

Active exploitation of CVE-2021-42008 has not been confirmed. Its EPSS score was 1.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-42008?

CVE-2021-42008 has a CVSS v3 base score of 7.8 (HIGH severity).

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