CVE-2020-27815: Debian Linux

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Linux Linux Kernel: after 4.4.249; from 4.5, before 4.9.249 (fixed in 4.9.249); from 4.10, before 4.14.213 (fixed in 4.14.213); from 4.15, before 4.19.164 (fixed in 4.19.164); from 4.20, before 5.4.86 (fixed in 5.4.86); from 5.5, before 5.10.4 (fixed in 5.10.4)
• Netapp Aff a250 Firmware: affected versions not specified
• Netapp FAS500F Firmware: affected versions not specified
• 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

Published 2021-05-26. Last modified 2026-06-17.