CVE-2021-3679

CVSS V2 Low 2.1 CVSS V3 Medium 5.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-3679
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-05T20:15:09
  • Last Modified Date
  • 2022-10-27T12:29:42
Weakness Enumerations
CWE URL
CWE-835 http://cwe.mitre.org/data/definitions/835.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.14
cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a Mailing List Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1989165 Issue Tracking Patch Third Party Advisory
https://www.debian.org/security/2021/dsa-4978 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-3679
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3679
History
Created Old Value New Value Data Type Notes
2022-05-10 06:39:51 Added to TrackCVE
2022-12-05 07:30:12 2021-08-05T20:15Z 2021-08-05T20:15:09 CVE Published Date updated
2022-12-05 07:30:12 2022-10-27T12:29:42 CVE Modified Date updated
2022-12-05 07:30:12 Analyzed Vulnerability Status updated