CVE-2022-47942

Name: CVE-2022-47942
Creator: NVD / NIST
Published: 2022-12-23T16:15:12.863+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.58%

Last modified Jun 17, 2026

CVE-2022-47942 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 3.58% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

3.58%

87.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.15, < 5.15.62
Linux	Linux Kernel	>= 5.16, < 5.18.18
Linux	Linux Kernel	>= 5.19, < 5.19.2

References

http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing List, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2Mailing List, Third Party Advisory, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7Mailing List, Patch, Third Party Advisory, Vendor Advisory
https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7Patch, Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-1688/Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing List, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2Mailing List, Third Party Advisory, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7Mailing List, Patch, Third Party Advisory, Vendor Advisory
https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7Patch, Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-1688/Third Party Advisory, VDB Entry

Timeline

Published: Dec 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-47942?

How severe is CVE-2022-47942?

CVE-2022-47942 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.58% probability of exploitation in the next 30 days.

How do I fix CVE-2022-47942?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-47942?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST