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CVE-2020-8992

Good to know:

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Date: February 13, 2020

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.

Language: C

Severity Score

Related Resources (12)

https://people.canonical.com/~ubuntu-security/cve/CVE-2020-8992
https://patchwork.ozlabs.org/patch/1236118/
https://usn.ubuntu.com/4344-1/
https://usn.ubuntu.com/4318-1/
https://nvd.nist.gov/vuln/detail/CVE-2020-8992
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4419-1/
https://security-tracker.debian.org/tracker/CVE-2020-8992
https://usn.ubuntu.com/4342-1/
https://security.netapp.com/advisory/ntap-20200313-0003/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://www.mend.io/vulnerability-database/CVE-2020-8992

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Excessive Iteration

CWE-834

Top Fix

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Upgrade Version

Upgrade to version linux-yocto - 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68;linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-libc-headers - 5.8

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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