CVE-2025-22043 ksmbd: add bounds check for durable handle context
Missing bounds check in ksmbd durable handle context allows attackers to cause denial of service or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-22043?
CVE-2025-22043 is a high-severity missing authorization vulnerability in Linux kernel, published on 16 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: add bounds check for durable handle context
Add missing bounds check for durable handle context.
Which versions are affected by CVE-2025-22043?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-22043?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-22043 being exploited?
There is no known exploitation of CVE-2025-22043 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-22043, DEBIAN-CVE-2025-22043, GHSA-35r5-x2r5-c49q, ROOT-OS-DEBIAN-12-CVE-2025-22043, ROOT-OS-UBUNTU-2204-CVE-2025-22043, ROOT-OS-UBUNTU-2404-CVE-2025-22043 and 1 more.