Vulnerability in Linux

CVE-2023-52442

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in compound request `smb2_get_msg()` in smb2_get_ksmbd_tcon() and smb2_check_user_session() will always return the first request smb2 header in a compound request. if `SMB2_TREE_CONNECT_HE` is the first command in compound request, will return 0, i.e. The tree id check is skipped. This patch use ksmbd_req_buf_next() to get current command in compound.

EPSS: 0.174 (96.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

References

Frequently asked questions

What is CVE-2023-52442?
CVE-2023-52442 is a critical-severity vulnerability in Linux. CVSS score: 9.1/10. Published 2024-02-21.
How severe is CVE-2023-52442?
Critical severity. CVSS v3 base score is 9.1 out of 10.