CVE-2022-47938
Microsoft SMBD Kernel Out-of-Bounds Read
Description
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2_TREE_CONNECT.
INFO
Published Date :
Dec. 23, 2022, 4:15 p.m.
Last Modified :
April 15, 2025, 4:15 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the Linux kernel.
- Reboot the system after the update.
Public PoC/Exploit Available at Github
CVE-2022-47938 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2022-47938.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-47938 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-2022-47938
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).
Bash script made for ksmb linux kernel 5.15 vuln check
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-47938 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-47938 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 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 15, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-125 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2022/12/23/10 Added Reference https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2 Added Reference https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=824d4f64c20093275f72fc8101394d75ff6a249e Added Reference https://github.com/torvalds/linux/commit/824d4f64c20093275f72fc8101394d75ff6a249e Added Reference https://www.zerodayinitiative.com/advisories/ZDI-22-1689/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Jan. 23, 2023
Action Type Old Value New Value Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-22-1689/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-22-1689/ Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Jan. 14, 2023
Action Type Old Value New Value Added Reference https://www.zerodayinitiative.com/advisories/ZDI-22-1689/ [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 30, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2022/12/23/10 No Types Assigned http://www.openwall.com/lists/oss-security/2022/12/23/10 Mailing List, Third Party Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2 Mailing List, Patch, Vendor Advisory Changed Reference Type https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=824d4f64c20093275f72fc8101394d75ff6a249e No Types Assigned https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=824d4f64c20093275f72fc8101394d75ff6a249e Mailing List, Patch, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/824d4f64c20093275f72fc8101394d75ff6a249e No Types Assigned https://github.com/torvalds/linux/commit/824d4f64c20093275f72fc8101394d75ff6a249e Patch, Third Party Advisory Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15 up to (excluding) 5.19.2 -
CVE Modified by [email protected]
Dec. 25, 2022
Action Type Old Value New Value Changed Description An issue was discovered in ksmbd in the Linux kernel before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2_TREE_CONNECT. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2_TREE_CONNECT. -
CVE Modified by [email protected]
Dec. 23, 2022
Action Type Old Value New Value Changed Description An issue was discovered in ksmbd in the Linux kernel before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2_TREE_CONNNECT. An issue was discovered in ksmbd in the Linux kernel before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2_TREE_CONNECT. Added Reference http://www.openwall.com/lists/oss-security/2022/12/23/10 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 6.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
4.61 }} -9.80%
score
0.88776
percentile