6.0
MEDIUM
CVE-2020-11565
Linux Kernel Mempolicy Mout Option Parsing Denial of Service
Description

An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”

INFO

Published Date :

April 6, 2020, 1:15 a.m.

Last Modified :

Aug. 4, 2024, 12:15 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

0.8
Public PoC/Exploit Available at Github

CVE-2020-11565 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-11565 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
1 Canonical ubuntu_linux
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-11565.

URL Resource
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd Mailing List Patch Vendor Advisory
https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://usn.ubuntu.com/4363-1/
https://usn.ubuntu.com/4364-1/ Third Party Advisory
https://usn.ubuntu.com/4367-1/ Third Party Advisory
https://usn.ubuntu.com/4368-1/ Third Party Advisory
https://usn.ubuntu.com/4369-1/
https://www.debian.org/security/2020/dsa-4667 Third Party Advisory
https://www.debian.org/security/2020/dsa-4698

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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vincent-deng/veracode-container-security-finding-parser

Map Vulnerabilities into Different Layers of the Container Image

Python

Updated: 1 year, 10 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 5, 2022, 12:07 p.m. This repo has been linked 1276 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-11565 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-11565 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Aug. 04, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jun. 26, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 17, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 11, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 21, 2024

    Action Type Old Value New Value
    Added Tag MITRE disputed
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Description ** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”. An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”
  • CVE Modified by [email protected]

    Jun. 10, 2020

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2020/dsa-4698 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 10, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html [No Types Assigned]
    Added Reference https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 10, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 30, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4369-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4363-1/ [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 26, 2020

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:P/A:P)
    Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
    Changed Reference Type https://usn.ubuntu.com/4364-1/ No Types Assigned https://usn.ubuntu.com/4364-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4367-1/ No Types Assigned https://usn.ubuntu.com/4367-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4368-1/ No Types Assigned https://usn.ubuntu.com/4368-1/ Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2020/dsa-4667 No Types Assigned https://www.debian.org/security/2020/dsa-4667 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  • CVE Modified by [email protected]

    May. 24, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4368-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 21, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4367-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 21, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4364-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 30, 2020

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2020/dsa-4667 [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 15, 2020

    Action Type Old Value New Value
    Changed Description An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. ** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”.
  • Initial Analysis by [email protected]

    Apr. 06, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd No Types Assigned https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd Mailing List, Patch, Vendor Advisory
    Changed Reference Type https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd No Types Assigned https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd Patch, Third Party Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.6.2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-11565 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-11565 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} 0.00%

score

0.14923

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: