CVE-2022-49166 ntfs: add sanity check on allocation size
A missing sanity check in the Linux kernel NTFS driver allows a local attacker to trigger a kernel bug and cause a denial of service.
- 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-2022-49166?
CVE-2022-49166 is a medium-severity vulnerability in Linux kernel, published on 26 Feb 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:
ntfs: add sanity check on allocation size
ntfs_read_inode_mount invokes ntfs_malloc_nofs with zero allocation size. It triggers one BUG in the __ntfs_malloc function.
Fix this by adding sanity check on ni->attr_list_size.
Which versions are affected by CVE-2022-49166?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49166?
Apply the vendor's patch.
Is CVE-2022-49166 being exploited?
There is no known exploitation of CVE-2022-49166 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49166, GHSA-v6vg-37g3-2xrq, UBUNTU-CVE-2022-49166.