CVE-2024-57800 ALSA: memalloc: prefer dma_mapping_error() over explicit address checking
A missing DMA mapping error check in the Linux kernel ALSA subsystem can trigger a kernel warning and potential instability when DMA API debugging is enabled.
- 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-2024-57800?
CVE-2024-57800 is a medium-severity vulnerability in Linux kernel, published on 11 Jan 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:
ALSA: memalloc: prefer dma_mapping_error() over explicit address checking
With CONFIG_DMA_API_DEBUG enabled, the following warning is observed:
DMA-API: snd_hda_intel 0000:03:00.1: device driver failed to check map error[device address=0x00000000ffff0000] [size=20480 bytes] [mapped as single] WARNING: CPU: 28 PID: 2255 at kernel/dma/debug.c:1036 check_unmap+0x1408/0x2430 CPU: 28 UID: 42 PID: 2255 Comm: wireplumber Tainted: G W L 6.12.0-10-133577cad6bf48e5a7848c4338124081393bfe8a+ #759 debug_dma_unmap_page+0xe9/0xf0 snd_dma_wc_free+0x85/0x130 [snd_pcm] snd_pcm_lib_free_pages+0x1e3/0x440 [snd_pcm] snd_pcm_common_ioctl+0x1c9a/0x2960 [snd_pcm] snd_pcm_ioctl+0x6a/0xc0 [snd_pcm] ...
Check for returned DMA addresses using specialized dma_mapping_error() helper which is generally recommended for this purpose by Documentation/core-api/dma-api.rst.
Which versions are affected by CVE-2024-57800?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-57800?
Apply the vendor's patch.
Is CVE-2024-57800 being exploited?
There is no known exploitation of CVE-2024-57800 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-57800, DEBIAN-CVE-2024-57800, GHSA-c45j-9fj5-mfm9, UBUNTU-CVE-2024-57800.