CVE-2022-49178 memstick/mspro_block: fix handling of read-only devices
A memory leak in the Linux kernel's memstick driver allows attackers to cause a denial of service by triggering read-only device handling errors.
- 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-2022-49178?
CVE-2022-49178 is a high-severity memory corruption 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:
memstick/mspro_block: fix handling of read-only devices
Use set_disk_ro to propagate the read-only state to the block layer instead of checking for it in ->open and leaking a reference in case of a read-only device.
Weakness: CWE-401
Which versions are affected by CVE-2022-49178?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49178?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-49178 being exploited?
There is no known exploitation of CVE-2022-49178 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-67682, DEBIAN-CVE-2022-49178, GHSA-wv38-qg96-rhr3, ROOT-OS-DEBIAN-11-CVE-2022-49178, ROOT-OS-UBUNTU-2204-CVE-2022-49178, UBUNTU-CVE-2022-49178.