GHSA-V977-RCCX-6678
Vulnerability from github – Published: 2024-09-18 09:30 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object
When using kernel with the following extra config,
- CONFIG_KASAN=y
- CONFIG_KASAN_GENERIC=y
- CONFIG_KASAN_INLINE=y
- CONFIG_KASAN_VMALLOC=y
- CONFIG_FRAME_WARN=4096
kernel detects that snd_pcm_suspend_all() access a freed 'snd_soc_pcm_runtime' object when the system is suspended, which leads to a use-after-free bug:
[ 52.047746] BUG: KASAN: use-after-free in snd_pcm_suspend_all+0x1a8/0x270 [ 52.047765] Read of size 1 at addr ffff0000b9434d50 by task systemd-sleep/2330
[ 52.047785] Call trace: [ 52.047787] dump_backtrace+0x0/0x3c0 [ 52.047794] show_stack+0x34/0x50 [ 52.047797] dump_stack_lvl+0x68/0x8c [ 52.047802] print_address_description.constprop.0+0x74/0x2c0 [ 52.047809] kasan_report+0x210/0x230 [ 52.047815] __asan_report_load1_noabort+0x3c/0x50 [ 52.047820] snd_pcm_suspend_all+0x1a8/0x270 [ 52.047824] snd_soc_suspend+0x19c/0x4e0
The snd_pcm_sync_stop() has a NULL check on 'substream->runtime' before making any access. So we need to always set 'substream->runtime' to NULL everytime we kfree() it.
{
"affected": [],
"aliases": [
"CVE-2024-46798"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-18T08:15:06Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: dapm: Fix UAF for snd_soc_pcm_runtime object\n\nWhen using kernel with the following extra config,\n\n - CONFIG_KASAN=y\n - CONFIG_KASAN_GENERIC=y\n - CONFIG_KASAN_INLINE=y\n - CONFIG_KASAN_VMALLOC=y\n - CONFIG_FRAME_WARN=4096\n\nkernel detects that snd_pcm_suspend_all() access a freed\n\u0027snd_soc_pcm_runtime\u0027 object when the system is suspended, which\nleads to a use-after-free bug:\n\n[ 52.047746] BUG: KASAN: use-after-free in snd_pcm_suspend_all+0x1a8/0x270\n[ 52.047765] Read of size 1 at addr ffff0000b9434d50 by task systemd-sleep/2330\n\n[ 52.047785] Call trace:\n[ 52.047787] dump_backtrace+0x0/0x3c0\n[ 52.047794] show_stack+0x34/0x50\n[ 52.047797] dump_stack_lvl+0x68/0x8c\n[ 52.047802] print_address_description.constprop.0+0x74/0x2c0\n[ 52.047809] kasan_report+0x210/0x230\n[ 52.047815] __asan_report_load1_noabort+0x3c/0x50\n[ 52.047820] snd_pcm_suspend_all+0x1a8/0x270\n[ 52.047824] snd_soc_suspend+0x19c/0x4e0\n\nThe snd_pcm_sync_stop() has a NULL check on \u0027substream-\u003eruntime\u0027 before\nmaking any access. So we need to always set \u0027substream-\u003eruntime\u0027 to NULL\neverytime we kfree() it.",
"id": "GHSA-v977-rccx-6678",
"modified": "2025-11-04T00:31:29Z",
"published": "2024-09-18T09:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46798"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3033ed903b4f28b5e1ab66042084fbc2c48f8624"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5d13afd021eb43868fe03cef6da34ad08831ad6d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6a14fad8be178df6c4589667efec1789a3307b4e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8ca21e7a27c66b95a4b215edc8e45e5d66679f9f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/993b60c7f93fa1d8ff296b58f646a867e945ae89"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b4a90b543d9f62d3ac34ec1ab97fc5334b048565"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fe5046ca91d631ec432eee3bdb1f1c49b09c8b5e"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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