CVE-2021-47168
Linux kernel NFS Filelayout Decode Array Index Out-of-Bounds.WRITEября
Description
In the Linux kernel, the following vulnerability has been resolved: NFS: fix an incorrect limit in filelayout_decode_layout() The "sizeof(struct nfs_fh)" is two bytes too large and could lead to memory corruption. It should be NFS_MAXFHSIZE because that's the size of the ->data[] buffer. I reversed the size of the arguments to put the variable on the left.
INFO
Published Date :
March 25, 2024, 10:15 a.m.
Last Modified :
March 17, 2025, 3:03 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel packages.
- Reboot the system to apply the changes.
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-2021-47168.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47168 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-2021-47168
weaknesses.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47168 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47168 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.
-
Initial Analysis by [email protected]
Mar. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.12.9 *cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 from (excluding) 5.10.42 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 from (excluding) 5.4.124 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.37 from (excluding) 4.4.271 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 from (excluding) 4.9.271 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 from (excluding) 4.14.235 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 from (excluding) 4.19.193 Added Reference Type CVE: https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714 Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8 Added Reference https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a Added Reference https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e Added Reference https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040 Added Reference https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1 Added Reference https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84 Added Reference https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1 Added Reference https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 25, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: NFS: fix an incorrect limit in filelayout_decode_layout() The "sizeof(struct nfs_fh)" is two bytes too large and could lead to memory corruption. It should be NFS_MAXFHSIZE because that's the size of the ->data[] buffer. I reversed the size of the arguments to put the variable on the left. Added Reference kernel.org https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8 [No types assigned]