CVE-2021-42008: Debian Linux

High severity, CVSS 7.8. EPSS: 1.6% chance of exploitation in the next 30 days.

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.

Affected products

• Debian Debian Linux: version 9.0 only
• Linux Linux Kernel: from 2.6.12, before 4.4.282 (fixed in 4.4.282); from 4.5, before 4.9.281 (fixed in 4.9.281); from 4.10, before 4.14.245 (fixed in 4.14.245); from 4.15, before 4.19.205 (fixed in 4.19.205); from 4.20, before 5.4.143 (fixed in 5.4.143); from 5.5, before 5.10.61 (fixed in 5.10.61); …
• Netapp h300e Firmware: affected versions not specified
• Netapp h300s Firmware: affected versions not specified
• Netapp h410c Firmware: affected versions not specified
• Netapp h410s Firmware: affected versions not specified
• Netapp h500e Firmware: affected versions not specified
• Netapp h500s Firmware: affected versions not specified
• Netapp h700e Firmware: affected versions not specified
• Netapp h700s Firmware: affected versions not specified
• Netapp Solidfire Baseboard Management Controller Firmware: affected versions not specified

Published 2021-10-05. Last modified 2026-06-17.