CVE-2021-45868
Linux kernel Quota Tree Use-After-Free Vulnerability
Description
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
INFO
Published Date :
March 18, 2022, 7:15 a.m.
Last Modified :
Feb. 4, 2023, midnight
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-45868 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-2021-45868
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-2021-45868.
| URL | Resource |
|---|---|
| https://bugzilla.kernel.org/show_bug.cgi?id=214655 | Exploit Issue Tracking Vendor Advisory |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3 | Mailing List Release Notes Vendor Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050 | Mailing List Patch Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20220419-0003/ | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2022/03/17/1 | Exploit Mailing List Patch Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2022/03/17/2 | Exploit Mailing List Patch Third Party Advisory |
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).
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-45868 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-45868 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 -
Reanalysis by [email protected]
Feb. 04, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.3 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.3 -
Modified Analysis by [email protected]
Apr. 27, 2022
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20220419-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20220419-0003/ Third Party Advisory 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: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:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 19, 2022
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20220419-0003/ [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 23, 2022
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://bugzilla.kernel.org/show_bug.cgi?id=214655 No Types Assigned https://bugzilla.kernel.org/show_bug.cgi?id=214655 Exploit, Issue Tracking, Vendor Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3 Mailing List, Release Notes, Vendor Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050 Mailing List, Patch, Vendor Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2022/03/17/1 No Types Assigned https://www.openwall.com/lists/oss-security/2022/03/17/1 Exploit, Mailing List, Patch, Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2022/03/17/2 No Types Assigned https://www.openwall.com/lists/oss-security/2022/03/17/2 Exploit, Mailing List, Patch, Third Party Advisory Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-45868 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-2021-45868
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} 0.02%
score
0.44489
percentile