CVE-2023-52442
Linux Kernel vulnerability
- Published21 Feb 2024
Description
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.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HAffected products
Remediation
References
Frequently asked
Is CVE-2023-52442 being actively exploited?
CVE-2023-52442 is not in the CISA KEV catalog. Its EPSS exploit probability is 29.6%.
How severe is CVE-2023-52442?
CVE-2023-52442 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 29.6% probability of exploitation.
Which products are affected by CVE-2023-52442?
Affected products include Linux Kernel.
How do I fix CVE-2023-52442?
Upgrade affected software to a fixed version, for example Linux Kernel 5.15.145 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2023-52442 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.