CVE-2024-46751 btrfs: don't BUG_ON() when 0 reference count at btrfs_lookup_extent_info()
A local attacker can trigger a kernel crash in the btrfs filesystem by causing a zero reference count, leading to 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-2024-46751?
CVE-2024-46751 is a high-severity denial of service vulnerability in Linux kernel, published on 18 Sep 2024. 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:
btrfs: don't BUG_ON() when 0 reference count at btrfs_lookup_extent_info()
Instead of doing a BUG_ON() handle the error by returning -EUCLEAN, aborting the transaction and logging an error message.
Which versions are affected by CVE-2024-46751?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-46751?
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-2024-46751 being exploited?
There is no known exploitation of CVE-2024-46751 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-49725, AZL-49734, BELL-CVE-2024-46751, DEBIAN-CVE-2024-46751, GHSA-v5h4-3gwf-6343, ROOT-OS-DEBIAN-11-CVE-2024-46751 and 3 more.