Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2021-38166 First vendor Publication 2021-08-07
Vendor Cve Last vendor Modification 2021-09-25

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38166

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
50 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 2
Os 3404

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20210909-0001/
DEBIAN https://www.debian.org/security/2021/dsa-4978
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
MISC https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f...
https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/

Alert History

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Date Informations
2021-09-25 21:23:27
  • Multiple Updates
2021-09-21 21:23:30
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2021-09-10 00:23:02
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2021-09-09 21:22:52
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2021-09-09 13:22:58
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2021-08-26 12:43:41
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2021-08-25 00:23:01
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2021-08-24 00:23:00
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2021-08-19 09:22:55
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2021-08-18 09:23:05
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2021-08-14 21:23:09
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2021-08-09 17:22:48
  • Multiple Updates
2021-08-08 00:22:46
  • First insertion