CVE-2023-52762 virtio-blk: fix implicit overflow on virtio_max_dma_size
An integer overflow in the Linux kernel's virtio-blk driver can cause a denial of service when handling large DMA sizes.
- 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-2023-52762?
CVE-2023-52762 is a medium-severity vulnerability in Linux kernel, published on 21 May 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:
virtio-blk: fix implicit overflow on virtio_max_dma_size
The following codes have an implicit conversion from size_t to u32: (u32)max_size = (size_t)virtio_max_dma_size(vdev);
This may lead overflow, Ex (size_t)4G -> (u32)0. Once virtio_max_dma_size() has a larger size than U32_MAX, use U32_MAX instead.
Weakness: CWE-190
Which versions are affected by CVE-2023-52762?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52762?
Apply the vendor's patch.
Is CVE-2023-52762 being exploited?
There is no known exploitation of CVE-2023-52762 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-52762, DEBIAN-CVE-2023-52762, GHSA-wwqr-5vx2-25qx, ROOT-OS-DEBIAN-11-CVE-2023-52762, UBUNTU-CVE-2023-52762.