CVE-2024-53127 Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"
A regression in the Linux kernel MMC driver causes system panics and data corruption when booting from SD cards on specific hardware.
- 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-2024-53127?
CVE-2024-53127 is a high-severity denial of service vulnerability in Linux kernel, published on 4 Dec 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:
Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"
The commit 8396c793ffdf ("mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K") increased the max_req_size, even for 4K pages, causing various issues: - Panic booting the kernel/rootfs from an SD card on Rockchip RK3566 - Panic booting the kernel/rootfs from an SD card on StarFive JH7100 - "swiotlb buffer is full" and data corruption on StarFive JH7110
At this stage no fix have been found, so it's probably better to just revert the change.
This reverts commit 8396c793ffdf28bb8aee7cfe0891080f8cab7890.
Which versions are affected by CVE-2024-53127?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-53127?
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-2024-53127 being exploited?
There is no known exploitation of CVE-2024-53127 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-54120, BELL-CVE-2024-53127, DEBIAN-CVE-2024-53127, GHSA-5cwm-fg2p-g6pp, UBUNTU-CVE-2024-53127.