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CVE-2021-4148

Date: March 23, 2022

A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.

Severity Score

Related Resources (8)

https://lkml.org/lkml/2021/9/17/1037
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-4148
https://bugzilla.redhat.com/show_bug.cgi?id=2026487
https://lkml.org/lkml/2021/9/12/323
https://nvd.nist.gov/vuln/detail/CVE-2021-4148
https://access.redhat.com/security/cve/CVE-2021-4148
https://security-tracker.debian.org/tracker/CVE-2021-4148
https://www.mend.io/vulnerability-database/CVE-2021-4148

Severity Score

Weakness Type (CWE)

Improper Validation of Integrity Check Value

CWE-354

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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