CVE-2022-47942

high

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.

References

Advisories

https://www.zerodayinitiative.com/advisories/ZDI-22-1688/

https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2

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

Details

Source: Mitre, NVD

Published: 2022-12-23

Updated: 2025-04-15

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H