Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2020-8992
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8992
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 22 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8992
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-8992
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: nvd@nist.gov (Primary)
-
The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-8992
-
https://usn.ubuntu.com/4342-1/
USN-4342-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/4318-1/
USN-4318-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/4324-1/
USN-4324-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/4344-1/
USN-4344-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/4419-1/
USN-4419-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
[security-announce] openSUSE-SU-2020:0336-1: important: Security updateMailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20200313-0003/
February 2020 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://patchwork.ozlabs.org/patch/1236118/
[v2] ext4: add cond_resched() to ext4_protect_reserved_inode - PatchworkPatch;Third Party Advisory
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