A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2785-1 linux-4.19 security update
Debian DLA Debian DLA DLA-2843-1 linux security update
Debian DSA Debian DSA DSA-4978-1 linux security update
EUVD EUVD EUVD-2021-26970 A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
Ubuntu USN Ubuntu USN USN-5091-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5091-2 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-5092-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5092-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5094-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5094-2 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-5096-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5115-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5299-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5343-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:01:08.334Z

Reserved: 2021-08-03T00:00:00

Link: CVE-2021-3679

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-05T20:15:09.627

Modified: 2024-11-21T06:22:08.627

Link: CVE-2021-3679

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-07-20T09:00:00Z

Links: CVE-2021-3679 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses