CVE-2020-8992
MEDIUMCVSS 5.5/10EPSS 0.42%
Last modified
CVE-2020-8992 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.5.3 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Opensuse | Leap | 15.1 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Cloud Backup | All versions |
| Netapp | Data Availability Services | All versions |
| Netapp | Hci Management Node | All versions |
| Netapp | Solidfire | All versions |
| Netapp | Steelstore Cloud Integrated Storage | All versions |
| Netapp | H410c Firmware | All versions |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlMailing List, Third Party Advisory
- https://patchwork.ozlabs.org/patch/1236118/Patch, 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/Third Party Advisory
- https://usn.ubuntu.com/4344-1/Third Party Advisory
- https://usn.ubuntu.com/4419-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlMailing List, Third Party Advisory
- https://patchwork.ozlabs.org/patch/1236118/Patch, 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/Third Party Advisory
- https://usn.ubuntu.com/4344-1/Third Party Advisory
- https://usn.ubuntu.com/4419-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2020-8992?
CVE-2020-8992 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8992?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-8986lib/NSSDropbox.php in ZendTo prior to 5.22-2 Beta failed to …9.8
- CVE-2020-8987Avast AntiTrack before 1.5.1.172 and AVG Antitrack before 2.…7.4
- CVE-2020-8988The Voatz application 2020-01-01 for Android allows only 100…5.9
- CVE-2020-8989In the Voatz application 2020-01-01 for Android, the amount …5.3
- CVE-2020-8990Western Digital My Cloud Home before 3.6.0 and ibi before 3.…9.1
- CVE-2020-8991vg_lookup in daemons/lvmetad/lvmetad-core.c in LVM2 2.02 mis…2.3
- CVE-2020-8994An issue was discovered on XIAOMI AI speaker MDZ-25-DT 1.34.…6.8
- CVE-2020-8995Programi Bilanc Build 007 Release 014 31.01.2020 supplies a …9.8
- CVE-2020-8996AnyShare Cloud 6.0.9 allows authenticated directory traversa…4.3
- CVE-2020-8997Older generation Abbott FreeStyle Libre sensors allow remote…8.8
- CVE-2020-8998Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-8999Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
Are you affected by CVE-2020-8992?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST