CVE-2025-37905

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-37905
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37905.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-37905
Downstream
Related
Published
2025-05-20T16:15:26Z
Modified
2025-08-13T01:04:56.523751Z
Summary
[none]
Details

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

firmware: arm_scmi: Balance device refcount when destroying devices

Using devicefindchild() to lookup the proper SCMI device to destroy causes an unbalance in device refcount, since devicefindchild() calls an implicit get_device(): this, in turns, inhibits the call of the provided release methods upon devices destruction.

As a consequence, one of the structures that is not freed properly upon destruction is the internal struct device_private dev->p populated by the drivers subsystem core.

KMemleak detects this situation since loading/unloding some SCMI driver causes related devices to be created/destroyed without calling any device_release method.

unreferenced object 0xffff00000f583800 (size 512): comm "insmod", pid 227, jiffies 4294912190 hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff ........`6...... backtrace (crc 114e2eed): kmemleakalloc+0xbc/0xd8 _kmalloccachenoprof+0x2dc/0x398 deviceadd+0x954/0x12d0 deviceregister+0x28/0x40 _scmidevicecreate.part.0+0x1bc/0x380 scmidevicecreate+0x2d0/0x390 scmicreateprotocoldevices+0x74/0xf8 scmidevicerequestnotifier+0x1f8/0x2a8 notifiercallchain+0x110/0x3b0 blockingnotifiercallchain+0x70/0xb0 scmidriverregister+0x350/0x7f0 0xffff80000a3b3038 dooneinitcall+0x12c/0x730 doinitmodule+0x1dc/0x640 loadmodule+0x4b20/0x5b70 initmodulefromfile+0xec/0x158

$ ./scripts/faddr2line ./vmlinux deviceadd+0x954/0x12d0 deviceadd+0x954/0x12d0: kmallocnoprof at include/linux/slab.h:901 (inlined by) kzallocnoprof at include/linux/slab.h:1037 (inlined by) deviceprivateinit at drivers/base/core.c:3510 (inlined by) device_add at drivers/base/core.c:3561

Balance device refcount by issuing a putdevice() on devices found via devicefind_child().

References

Affected packages

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.140-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.1.112-1
6.1.115-1
6.1.119-1
6.1.123-1
6.1.124-1
6.1.128-1
6.1.129-1
6.1.133-1
6.1.135-1
6.1.137-1
6.1.139-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.29-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.29-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:11 / linux-6.1

Package

Name
linux-6.1
Purl
pkg:deb/debian/linux-6.1?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.140-1~deb11u1

Affected versions

6.*

6.1.106-3~deb11u1
6.1.106-3~deb11u2
6.1.106-3~deb11u3
6.1.112-1~deb11u1
6.1.119-1~deb11u1
6.1.128-1~deb11u1
6.1.129-1~deb11u1
6.1.137-1~deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}