CVE - CVE-2025-37905

CVE-ID
CVE-2025-37905	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Balance device refcount when destroying devices Using device_find_child() to lookup the proper SCMI device to destroy causes an unbalance in device refcount, since device_find_child() 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): kmemleak_alloc+0xbc/0xd8 __kmalloc_cache_noprof+0x2dc/0x398 device_add+0x954/0x12d0 device_register+0x28/0x40 __scmi_device_create.part.0+0x1bc/0x380 scmi_device_create+0x2d0/0x390 scmi_create_protocol_devices+0x74/0xf8 scmi_device_request_notifier+0x1f8/0x2a8 notifier_call_chain+0x110/0x3b0 blocking_notifier_call_chain+0x70/0xb0 scmi_driver_register+0x350/0x7f0 0xffff80000a3b3038 do_one_initcall+0x12c/0x730 do_init_module+0x1dc/0x640 load_module+0x4b20/0x5b70 init_module_from_file+0xec/0x158 $ ./scripts/faddr2line ./vmlinux device_add+0x954/0x12d0 device_add+0x954/0x12d0: kmalloc_noprof at include/linux/slab.h:901 (inlined by) kzalloc_noprof at include/linux/slab.h:1037 (inlined by) device_private_init at drivers/base/core.c:3510 (inlined by) device_add at drivers/base/core.c:3561 Balance device refcount by issuing a put_device() on devices found via device_find_child().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3 URL:https://git.kernel.org/stable/c/2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3 MISC:https://git.kernel.org/stable/c/8a8a3547d5c4960da053df49c75bf623827a25da URL:https://git.kernel.org/stable/c/8a8a3547d5c4960da053df49c75bf623827a25da MISC:https://git.kernel.org/stable/c/91ff1e9652fb9beb0174267d6bb38243dff211bb URL:https://git.kernel.org/stable/c/91ff1e9652fb9beb0174267d6bb38243dff211bb MISC:https://git.kernel.org/stable/c/969d8beaa2e374387bf9aa5602ef84fc50bb48d8 URL:https://git.kernel.org/stable/c/969d8beaa2e374387bf9aa5602ef84fc50bb48d8 MISC:https://git.kernel.org/stable/c/9ca67840c0ddf3f39407339624cef824a4f27599 URL:https://git.kernel.org/stable/c/9ca67840c0ddf3f39407339624cef824a4f27599 MISC:https://git.kernel.org/stable/c/ff4273d47da81b95ed9396110bcbd1b7b7470fe8 URL:https://git.kernel.org/stable/c/ff4273d47da81b95ed9396110bcbd1b7b7470fe8
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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