Medium severity · published Feb 14, 2020
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 denial of service (soft lockup) via a crafted journal size
5.5
CVSS
0.4%
EPSS
No
On KEV
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
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
through 5.5.3 · source: NVD
AI
Active IQ Unified Manager · Netapp
All versions, or not specified · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
DA
Data Availability Services · Netapp
All versions, or not specified · source: NVD
HF
H410c Firmware · Netapp
All versions, or not specified · source: NVD
HM
Hci Management Node · Netapp
All versions, or not specified · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
SO
Solidfire · Netapp
All versions, or not specified · source: NVD
SC
Steelstore Cloud Integrated Storage · Netapp
All versions, or not specified · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 19.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8992
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8992
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
Patch
https://patchwork.ozlabs.org/patch/1236118/
Third 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/
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