What is CVE-2022-47942?

CVE-2022-47942 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787). CVE-2022-47942 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-47942?

CVE-2022-47942 has a CVSS score of 8.8 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:H/A:H.

Is there a patch available for CVE-2022-47942?

No patch is currently available for CVE-2022-47942. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2022-47942 actively exploited?

CVE-2022-47942 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2022-47942

High

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-based buffer overflow in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed SMB2_SET_INFO_HE command.

Package Linux Kernel

Published 2022-12-23

Last modified 2025-04-15

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-787

CVE-2022-47942 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes 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-2022-47942 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.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2

Mailing List Third Party Advisory Vendor Advisory
Zerodayinitiative
https://www.zerodayinitiative.com/advisories/ZDI-22-1688/

Third Party Advisory VDB Entry
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7
Patch

Details

CVE ID CVE-2022-47942

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2022-12-23

Modified 2025-04-15

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2022-47942?

CVE-2022-47942 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2022-47942 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-47942?

CVE-2022-47942 has a CVSS score of 8.8 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:H/A:H.
Is there a patch available for CVE-2022-47942?

No patch is currently available for CVE-2022-47942. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2022-47942 actively exploited?

No — CVE-2022-47942 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. View CWE-787 on MITRE CWE →