What’s Vulnerable › Vulnerabilities

CVE-2020-8992

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-02-14 · updated 2026-06-17
• Weakness: CWE-400

Description

ext4_protect_reserved_inode in fs/ext4/block_validity.c in the Linux kernel through 5.5.3 allows attackers to cause a denial of service (soft lockup) via a crafted journal size.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.10
• Linux kernel: through 5.5.3
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp Cloud Backup: all versions
• NetApp Data Availability Services: all versions
• NetApp H410C Firmware: all versions
• NetApp Hci Management Node: all versions
• NetApp Solidfire: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions
• openSUSE Leap: 15.1

References

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• https://patchwork.ozlabs.org/patch/1236118/
• https://security.netapp.com/advisory/ntap-20200313-0003/
• https://usn.ubuntu.com/4318-1/
• https://usn.ubuntu.com/4324-1/
• https://usn.ubuntu.com/4342-1/
• https://usn.ubuntu.com/4344-1/
• https://usn.ubuntu.com/4419-1/
• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• https://patchwork.ozlabs.org/patch/1236118/
• https://security.netapp.com/advisory/ntap-20200313-0003/
• https://usn.ubuntu.com/4318-1/

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