CVE-2022-49099

Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()

published February 26, 2025

CVSS
—
EPSS
0%
Percentile
10.6
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()

Initialize the device's dma_{mask,parms} pointers and the device's

dma_mask value before invoking device_register(). Address the

following trace with 5.17-rc7:

[ 49.646839] WARNING: CPU: 0 PID: 189 at include/linux/dma-mapping.h:543

netvsc_probe+0x37a/0x3a0 [hv_netvsc]

[ 49.646928] Call Trace:

[ 49.646930] <TASK>

[ 49.646935] vmbus_probe+0x40/0x60 [hv_vmbus]

[ 49.646942] really_probe+0x1ce/0x3b0

[ 49.646948] __driver_probe_device+0x109/0x180

[ 49.646952] driver_probe_device+0x23/0xa0

[ 49.646955] __device_attach_driver+0x76/0xe0

[ 49.646958] ? driver_allows_async_probing+0x50/0x50

[ 49.646961] bus_for_each_drv+0x84/0xd0

[ 49.646964] __device_attach+0xed/0x170

[ 49.646967] device_initial_probe+0x13/0x20

[ 49.646970] bus_probe_device+0x8f/0xa0

[ 49.646973] device_add+0x41a/0x8e0

[ 49.646975] ? hrtimer_init+0x28/0x80

[ 49.646981] device_register+0x1b/0x20

[ 49.646983] vmbus_device_register+0x5e/0xf0 [hv_vmbus]

[ 49.646991] vmbus_add_channel_work+0x12d/0x190 [hv_vmbus]

[ 49.646999] process_one_work+0x21d/0x3f0

[ 49.647002] worker_thread+0x4a/0x3b0

[ 49.647005] ? process_one_work+0x3f0/0x3f0

[ 49.647007] kthread+0xff/0x130

[ 49.647011] ? kthread_complete_and_exit+0x20/0x20

[ 49.647015] ret_from_fork+0x22/0x30

[ 49.647020] </TASK>

[ 49.647021] ---[ end trace 0000000000000000 ]---

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00210 · 10.6th percentile
Published
2025-02-26T01:54Z
EPSS history
Timeline
  • 26 FEB 01:54Z
    Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()
    cvelistv5