What is CVE-2022-47940?

CVE-2022-47940 is a High severity Linux kernel vulnerability with a CVSS score of 8.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2022-47940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-47940?

CVE-2022-47940 has a CVSS score of 8.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2022-47940?

No patch is currently available for CVE-2022-47940. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2022-47940 actively exploited?

CVE-2022-47940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2022-47940

High

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.18 before 5.18.18. fs/ksmbd/smb2pdu.c lacks length validation in the non-padding case in smb2_write.

Package Linux Kernel

Published 2022-12-23

Last modified 2025-04-14

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

8.1

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness type

CWE-125

CVE-2022-47940 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2022-47940 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Openwall
http://www.openwall.com/lists/oss-security/2022/12/23/10

Mailing List Third Party Advisory
Kernel patch commit
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18
Patch
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=158a66b245739e15858de42c0ba60fcf3de9b8e6
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/158a66b245739e15858de42c0ba60fcf3de9b8e6
Patch

Details

CVE ID CVE-2022-47940

Severity High

CVSS score 8.1 / 10

CVSS version 3.1

Published 2022-12-23

Modified 2025-04-14

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2022-47940?

CVE-2022-47940 is a High severity Linux kernel vulnerability with a CVSS score of 8.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2022-47940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-47940?

CVE-2022-47940 has a CVSS score of 8.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2022-47940?

No patch is currently available for CVE-2022-47940. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2022-47940 actively exploited?

No — CVE-2022-47940 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. View CWE-125 on MITRE CWE →