CVE-2022-49384 md: fix double free of io_acct_set bioset
A double free vulnerability in the Linux kernel's md driver allows attackers to cause denial of service or potentially execute code.
- 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-2022-49384?
CVE-2022-49384 is a high-severity use after free 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:
md: fix double free of io_acct_set bioset
Now io_acct_set is alloc and free in personality. Remove the codes that free io_acct_set in md_free and md_stop.
Weakness: CWE-415
Which versions are affected by CVE-2022-49384?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49384?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-49384 being exploited?
There is no known exploitation of CVE-2022-49384 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49384, GHSA-5p33-cx2m-4x9v, UBUNTU-CVE-2022-49384.