CVE-2024-57800

ALSA: memalloc: prefer dma_mapping_error() over explicit address checking

published January 11, 2025

CVSS
—
EPSS
0%
Percentile
10.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00211 · 10.8th percentile
Published
2025-01-11T12:39Z
EPSS history
Timeline
  • 11 JAN 12:39Z
    ALSA: memalloc: prefer dma_mapping_error() over explicit address checking
    cvelistv5