CVE-2023-4515: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate command request size In commit 2b9b8f3b68ed ("ksmbd: validate command payload size"), except for SMB2_OPLOCK_BREAK_HE command, the request size of other commands is not checked, it's not expected. Fix it by add check for request size of other commands.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.15.121 — 5.15.127
linux	linux_kernel	6.1.36 — 6.1.46
linux	linux_kernel	6.3.10 — 6.4
linux	linux_kernel	6.4.1 — 6.4.11
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/595679098bdcdbfbba91ebe07a2f7f208df93870 https://git.kernel.org/stable/c/5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c https://git.kernel.org/stable/c/c6bef3bc30fd4a175aef846b7d928a6c40d091cd https://git.kernel.org/stable/c/ff7236b66d69582f90cf5616e63cfc3dc18142bb

Frequently Asked Questions

What is CVE-2023-4515? +

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate command request size In commit 2b9b8f3b68ed ("ksmbd: validate command payload size"), except for SMB2_OPLOCK_BREAK_HE command, the request size of other commands is not checked, it's not expected. Fix it by add check for request size of other commands. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-4515? +

CVE-2023-4515 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-4515? +

CVE-2023-4515 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-4515? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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