CVE-2023-53008 cifs: fix potential memory leaks in session setup
A memory leak in the Linux kernel CIFS session setup allows attackers to cause denial of service by exhausting system memory.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-53008?
CVE-2023-53008 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix potential memory leaks in session setup
Make sure to free cifs_ses::auth_key.response before allocating it as we might end up leaking memory in reconnect or mounting.
Weakness: CWE-401
Which versions are affected by CVE-2023-53008?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53008?
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-2023-53008 being exploited?
There is no known exploitation of CVE-2023-53008 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-60309, BELL-CVE-2023-53008, DEBIAN-CVE-2023-53008, GHSA-wpc3-48hj-vqgf, ROOT-OS-DEBIAN-11-CVE-2023-53008, ROOT-OS-UBUNTU-2204-CVE-2023-53008 and 1 more.