Home/CVE/ext4_protect_reserved_inode in fs/ext4/block_validity.c in the Linux kernel through 5.5.3 allows attackers to cause a de
CVE

CVE-2020-8992

ext4_protect_reserved_inode in fs/ext4/block_validity.c in the Linux kernel through 5.5.3 allows attackers to cause a de

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.

MEDIUM · CVSS 5.5 EPSS 0.00054
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-834Excessive Iteration
▤

Affected Products & Versions

10
linux kernel<= 5.5.3
canonical ubuntu linuxall versions
opensuse leapall versions
netapp active iq unified managerall versions
netapp cloud backupall versions
netapp data availability servicesall versions
netapp hci management nodeall versions
netapp solidfireall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Feb 2020 · 05:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

19
msrcCVE-2020-8992
usnUSN-4419-1
suse-csafSUSE-SU-2020:1663-1
suse-csafSUSE-SU-2020:1255-1
suse-csafSUSE-SU-2020:1275-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlMailing ListThird Party Advisory
https://patchwork.ozlabs.org/patch/1236118/PatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20200313-0003/Third Party Advisory
https://usn.ubuntu.com/4318-1/Third Party Advisory
https://usn.ubuntu.com/4324-1/Third Party Advisory
https://usn.ubuntu.com/4342-1/Third Party Advisory
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