CVE-2023-39180 Kernel: ksmbd: read request memory leak denial-of-service vulnerability
An unauthenticated attacker can cause a denial of service via memory leak in the Linux kernel ksmbd module when enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-39180?
CVE-2023-39180 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.
Which versions are affected by CVE-2023-39180?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-39180?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-39180 being exploited?
There is no known exploitation of CVE-2023-39180 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-39180, DEBIAN-CVE-2023-39180, GHSA-9qrv-rvg6-cq37, UBUNTU-CVE-2023-39180.