CVE-2020-8992 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

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/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5