7.0
HIGH
CVE-2020-25668
Linux Kernel Use After Free Denial of Service
Description
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
INFO
Published Date :
May 26, 2021, 12:15 p.m.
Last Modified :
Nov. 7, 2023, 3:20 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.0
Public PoC/Exploit Available at Github
CVE-2020-25668 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-2020-25668
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.
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-2020-25668.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2020/10/30/1 | Exploit Mailing List Patch Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2020/11/04/3 | Exploit Mailing List Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C | |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220 | Mailing List Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210702-0005/ | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2020/10/30/1%2C | |
| https://www.openwall.com/lists/oss-security/2020/11/04/3%2C |
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).
None
Makefile C Assembly Shell Perl C++ Awk sed Python GDB
Updated: 9 months ago
0 stars
0 fork
0 watcher
Born at : Dec. 13, 2023, 9:14 a.m.
This repo has been linked 1 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-2020-25668 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-25668 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]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://www.openwall.com/lists/oss-security/2020/11/04/3%2C [No types assigned] Added Reference Red Hat, Inc. https://www.openwall.com/lists/oss-security/2020/10/30/1%2C [No types assigned] Added Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C [No types assigned] Removed Reference Red Hat, Inc. https://www.openwall.com/lists/oss-security/2020/10/30/1, Removed Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=1893287, Removed Reference Red Hat, Inc. https://www.openwall.com/lists/oss-security/2020/11/04/3, Removed CWE Red Hat, Inc. CWE-416 -
Reanalysis by [email protected]
Oct. 05, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 4.4.242 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.242 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.204 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.155 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.75 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.9.5 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.4.242 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.242 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.204 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.155 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.75 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.9.5 -
Reanalysis by [email protected]
Jul. 28, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.9.2:*:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 4.4.242 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.242 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.204 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.155 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.75 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.9.5 -
Reanalysis by [email protected]
Aug. 05, 2022
Action Type Old Value New Value Added CWE NIST CWE-662 -
Modified Analysis by [email protected]
May. 13, 2022
Action Type Old Value New Value Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1893287, Broken Link https://bugzilla.redhat.com/show_bug.cgi?id=1893287, Broken Link, Issue Tracking Changed Reference Type https://security.netapp.com/advisory/ntap-20210702-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20210702-0005/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:500f:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 02, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210702-0005/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 04, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2020/10/30/1 No Types Assigned http://www.openwall.com/lists/oss-security/2020/10/30/1 Exploit, Mailing List, Patch, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2020/11/04/3 No Types Assigned http://www.openwall.com/lists/oss-security/2020/11/04/3 Exploit, Mailing List, Patch, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1893287, No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1893287, Broken Link Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220 Mailing List, Patch, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing List, Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2020/10/30/1, No Types Assigned https://www.openwall.com/lists/oss-security/2020/10/30/1, Exploit, Mailing List, Patch, Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2020/11/04/3, No Types Assigned https://www.openwall.com/lists/oss-security/2020/11/04/3, Exploit, Mailing List, Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.9.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
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-2020-25668 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-2020-25668
weaknesses.
CAPEC-26: Leveraging Race Conditions Leveraging Race Conditions
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
CAPEC-25: Forced Deadlock Forced Deadlock
CAPEC-26: Leveraging Race Conditions Leveraging Race Conditions
CAPEC-27: Leveraging Race Conditions via Symbolic Links Leveraging Race Conditions via Symbolic Links
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
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
0.19808
percentile
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability