CVE-2022-47943

high

Description

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.

References

Advisories
More

https://www.zerodayinitiative.com/advisories/ZDI-22-1691/

https://security.netapp.com/advisory/ntap-20230216-0006/

https://github.com/torvalds/linux/commit/ac60778b87e45576d7bfdbd6f53df902654e6f09

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

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac60778b87e45576d7bfdbd6f53df902654e6f09

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

Details

Source: Mitre, NVD

Published: 2022-12-23

Updated: 2025-04-15

Risk Information

CVSS v2

Base Score: 8.5

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

Severity: High

CVSS v3

Base Score: 8.1

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